64100997 has 16 divisors (see below), whose sum is σ = 96986880. Its totient is φ = 41823936.

The previous prime is 64100989. The next prime is 64101013. The reversal of 64100997 is 79900146.

64100997 is a `hidden beast` number, since 641 + 0 + 0 + 9 + 9 + 7 = 666.

It is not a de Polignac number, because 64100997 - 2³ = 64100989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64100947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23988 + ... + 26525.

It is an arithmetic number, because the mean of its divisors is an integer number (6061680).

Almost surely, 2^64100997 is an apocalyptic number.

It is an amenable number.

64100997 is a deficient number, since it is larger than the sum of its proper divisors (32885883).

64100997 is a wasteful number, since it uses less digits than its factorization.

64100997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50569 (or 50563 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 64100997 is about 8006.3098241325. The cubic root of 64100997 is about 400.2102998322.

The spelling of 64100997 in words is "sixty-four million, one hundred thousand, nine hundred ninety-seven".