89664772761 has 12 divisors (see below), whose sum is σ = 131076215088. Its totient is φ = 59056315704.

The previous prime is 89664772753. The next prime is 89664772787. The reversal of 89664772761 is 16727746698.

89664772761 is a `hidden beast` number, since 8 + 96 + 6 + 477 + 2 + 76 + 1 = 666.

It is not a de Polignac number, because 89664772761 - 2³ = 89664772753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89664772741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60015835 + ... + 60017328.

It is an arithmetic number, because the mean of its divisors is an integer number (10923017924).

Almost surely, 2^89664772761 is an apocalyptic number.

It is an amenable number.

89664772761 is a deficient number, since it is larger than the sum of its proper divisors (41411442327).

89664772761 is a wasteful number, since it uses less digits than its factorization.

89664772761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120033252 (or 120033249 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The spelling of 89664772761 in words is "eighty-nine billion, six hundred sixty-four million, seven hundred seventy-two thousand, seven hundred sixty-one".