76722751 has 8 divisors (see below), whose sum is σ = 92841120. Its totient is φ = 61893888.

The previous prime is 76722739. The next prime is 76722769. The reversal of 76722751 is 15722767.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 76722751 - 2¹³ = 76714559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76722751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76722251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322246 + ... + 322483.

It is an arithmetic number, because the mean of its divisors is an integer number (11605140).

Almost surely, 2^76722751 is an apocalyptic number.

76722751 is a deficient number, since it is larger than the sum of its proper divisors (16118369).

76722751 is a wasteful number, since it uses less digits than its factorization.

76722751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644753.

The product of its digits is 41160, while the sum is 37.

The square root of 76722751 is about 8759.1524133332. The cubic root of 76722751 is about 424.9208636969.

The spelling of 76722751 in words is "seventy-six million, seven hundred twenty-two thousand, seven hundred fifty-one".