64156632 has 16 divisors (see below), whose sum is σ = 160391640. Its totient is φ = 21385536.

The previous prime is 64156621. The next prime is 64156633. The reversal of 64156632 is 23665146.

It is a junction number, because it is equal to n+sod(n) for n = 64156593 and 64156602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64156633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1336573 + ... + 1336620.

Almost surely, 2^64156632 is an apocalyptic number.

It is an amenable number.

64156632 is an abundant number, since it is smaller than the sum of its proper divisors (96235008).

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

64156632 is a wasteful number, since it uses less digits than its factorization.

64156632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673202 (or 2673198 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 64156632 is about 8009.7835176739. The cubic root of 64156632 is about 400.3260508216.

The spelling of 64156632 in words is "sixty-four million, one hundred fifty-six thousand, six hundred thirty-two".