64855434 has 16 divisors (see below), whose sum is σ = 148241088. Its totient is φ = 18530112.

The previous prime is 64855403. The next prime is 64855477. The reversal of 64855434 is 43455846.

It is a junction number, because it is equal to n+sod(n) for n = 64855392 and 64855401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772047 + ... + 772130.

It is an arithmetic number, because the mean of its divisors is an integer number (9265068).

Almost surely, 2^64855434 is an apocalyptic number.

64855434 is an abundant number, since it is smaller than the sum of its proper divisors (83385654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64855434 is a wasteful number, since it uses less digits than its factorization.

64855434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544189.

The product of its digits is 230400, while the sum is 39.

The square root of 64855434 is about 8053.2871549449. The cubic root of 64855434 is about 401.7742724237.

The spelling of 64855434 in words is "sixty-four million, eight hundred fifty-five thousand, four hundred thirty-four".