78306701 has 4 divisors (see below), whose sum is σ = 85425504. Its totient is φ = 71187900.

The previous prime is 78306659. The next prime is 78306703. The reversal of 78306701 is 10760387.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10760387 = 11 ⋅978217.

It is a cyclic number.

It is not a de Polignac number, because 78306701 - 2¹⁸ = 78044557 is a prime.

It is a super-2 number, since 2×78306701² = 12263878843006802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78306703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3559385 + ... + 3559406.

It is an arithmetic number, because the mean of its divisors is an integer number (21356376).

Almost surely, 2^78306701 is an apocalyptic number.

It is an amenable number.

78306701 is a deficient number, since it is larger than the sum of its proper divisors (7118803).

78306701 is a wasteful number, since it uses less digits than its factorization.

78306701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7118802.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 78306701 is about 8849.1073561123. The cubic root of 78306701 is about 427.8251480285.

The spelling of 78306701 in words is "seventy-eight million, three hundred six thousand, seven hundred one".