64651434 has 16 divisors (see below), whose sum is σ = 129809088. Its totient is φ = 21466112.

The previous prime is 64651427. The next prime is 64651451. The reversal of 64651434 is 43415646.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64651395 and 64651404.

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, 19422 + ... + 22505.

It is an arithmetic number, because the mean of its divisors is an integer number (8113068).

Almost surely, 2^64651434 is an apocalyptic number.

64651434 is an abundant number, since it is smaller than the sum of its proper divisors (65157654).

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

64651434 is a wasteful number, since it uses less digits than its factorization.

64651434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42189.

The product of its digits is 34560, while the sum is 33.

The square root of 64651434 is about 8040.6115439063. The cubic root of 64651434 is about 401.3525753612.

The spelling of 64651434 in words is "sixty-four million, six hundred fifty-one thousand, four hundred thirty-four".