64694435 has 32 divisors (see below), whose sum is σ = 89413632. Its totient is φ = 44513280.

The previous prime is 64694431. The next prime is 64694467. The reversal of 64694435 is 53449646.

It is not a de Polignac number, because 64694435 - 2² = 64694431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64694392 and 64694401.

It is not an unprimeable number, because it can be changed into a prime (64694431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140105 + ... + 140565.

It is an arithmetic number, because the mean of its divisors is an integer number (2794176).

Almost surely, 2^64694435 is an apocalyptic number.

64694435 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64694435 is a deficient number, since it is larger than the sum of its proper divisors (24719197).

64694435 is a wasteful number, since it uses less digits than its factorization.

64694435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623.

The product of its digits is 311040, while the sum is 41.

The square root of 64694435 is about 8043.2850875746. The cubic root of 64694435 is about 401.4415382612.

The spelling of 64694435 in words is "sixty-four million, six hundred ninety-four thousand, four hundred thirty-five".