81614763 has 8 divisors (see below), whose sum is σ = 120910800. Its totient is φ = 54409824.

The previous prime is 81614699. The next prime is 81614779. The reversal of 81614763 is 36741618.

It is not a de Polignac number, because 81614763 - 2⁶ = 81614699 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (81614783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1511358 + ... + 1511411.

It is an arithmetic number, because the mean of its divisors is an integer number (15113850).

Almost surely, 2^81614763 is an apocalyptic number.

81614763 is a deficient number, since it is larger than the sum of its proper divisors (39296037).

81614763 is a wasteful number, since it uses less digits than its factorization.

81614763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022778 (or 3022772 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 81614763 is about 9034.0889413377. The cubic root of 81614763 is about 433.7667327936.

The spelling of 81614763 in words is "eighty-one million, six hundred fourteen thousand, seven hundred sixty-three".