64401035 has 16 divisors (see below), whose sum is σ = 81029376. Its totient is φ = 49043808.

The previous prime is 64401031. The next prime is 64401079. The reversal of 64401035 is 53010446.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64401035 - 2² = 64401031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64401035.

It is not an unprimeable number, because it can be changed into a prime (64401031) 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, 24872 + ... + 27338.

It is an arithmetic number, because the mean of its divisors is an integer number (5064336).

Almost surely, 2^64401035 is an apocalyptic number.

64401035 is a deficient number, since it is larger than the sum of its proper divisors (16628341).

64401035 is a wasteful number, since it uses less digits than its factorization.

64401035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 64401035 is about 8025.0255451307. The cubic root of 64401035 is about 400.8337505260.

The spelling of 64401035 in words is "sixty-four million, four hundred one thousand, thirty-five".