64357838 has 4 divisors (see below), whose sum is σ = 96536760. Its totient is φ = 32178918.

The previous prime is 64357831. The next prime is 64357859. The reversal of 64357838 is 83875346.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64357831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16089458 + ... + 16089461.

It is an arithmetic number, because the mean of its divisors is an integer number (24134190).

Almost surely, 2^64357838 is an apocalyptic number.

64357838 is a deficient number, since it is larger than the sum of its proper divisors (32178922).

64357838 is a wasteful number, since it uses less digits than its factorization.

64357838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32178921.

The product of its digits is 483840, while the sum is 44.

The square root of 64357838 is about 8022.3337003643. Note that the first 3 decimals coincide. The cubic root of 64357838 is about 400.7441107230.

The spelling of 64357838 in words is "sixty-four million, three hundred fifty-seven thousand, eight hundred thirty-eight".