64231634 has 4 divisors (see below), whose sum is σ = 96347454. Its totient is φ = 32115816.

The previous prime is 64231633. The next prime is 64231649. The reversal of 64231634 is 43613246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43099225 + 21132409 = 6565^2 + 4597^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64231597 and 64231606.

It is not an unprimeable number, because it can be changed into a prime (64231633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16057907 + ... + 16057910.

Almost surely, 2^64231634 is an apocalyptic number.

64231634 is a deficient number, since it is larger than the sum of its proper divisors (32115820).

64231634 is a wasteful number, since it uses less digits than its factorization.

64231634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32115819.

The product of its digits is 10368, while the sum is 29.

The square root of 64231634 is about 8014.4640494546. The cubic root of 64231634 is about 400.4819898146.

The spelling of 64231634 in words is "sixty-four million, two hundred thirty-one thousand, six hundred thirty-four".