64395738 has 24 divisors (see below), whose sum is σ = 152208576. Its totient is φ = 19513800.

The previous prime is 64395713. The next prime is 64395761. The reversal of 64395738 is 83759346.

It is a super-2 number, since 2×64395738² = 8293622145129288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64395693 and 64395702.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162418 + ... + 162813.

It is an arithmetic number, because the mean of its divisors is an integer number (6342024).

Almost surely, 2^64395738 is an apocalyptic number.

64395738 is an abundant number, since it is smaller than the sum of its proper divisors (87812838).

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

64395738 is a wasteful number, since it uses less digits than its factorization.

64395738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325250 (or 325247 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 64395738 is about 8024.6955082420. The cubic root of 64395738 is about 400.8227606685.

The spelling of 64395738 in words is "sixty-four million, three hundred ninety-five thousand, seven hundred thirty-eight".