64099901 has 16 divisors (see below), whose sum is σ = 69196800. Its totient is φ = 59194800.

The previous prime is 64099879. The next prime is 64099907. The reversal of 64099901 is 10999046.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64099901 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64099907) 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, 236396 + ... + 236666.

It is an arithmetic number, because the mean of its divisors is an integer number (4324800).

Almost surely, 2^64099901 is an apocalyptic number.

64099901 is the 3581-st centered decagonal number.

It is an amenable number.

64099901 is a deficient number, since it is larger than the sum of its proper divisors (5096899).

64099901 is a wasteful number, since it uses less digits than its factorization.

64099901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 64099901 is about 8006.2413778252. The cubic root of 64099901 is about 400.2080188849.

The spelling of 64099901 in words is "sixty-four million, ninety-nine thousand, nine hundred one".