99646457 has 4 divisors (see below), whose sum is σ = 101335440. Its totient is φ = 97957476.

The previous prime is 99646427. The next prime is 99646541. The reversal of 99646457 is 75464699.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99646457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99646427) 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, 844403 + ... + 844520.

It is an arithmetic number, because the mean of its divisors is an integer number (25333860).

Almost surely, 2^99646457 is an apocalyptic number.

It is an amenable number.

99646457 is a deficient number, since it is larger than the sum of its proper divisors (1688983).

99646457 is a wasteful number, since it uses less digits than its factorization.

99646457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688982.

The product of its digits is 1632960, while the sum is 50.

The square root of 99646457 is about 9982.3071982383. The cubic root of 99646457 is about 463.6112370513.

The spelling of 99646457 in words is "ninety-nine million, six hundred forty-six thousand, four hundred fifty-seven".