64695388 has 48 divisors (see below), whose sum is σ = 122572800. Its totient is φ = 29816640.

The previous prime is 64695347. The next prime is 64695439. The reversal of 64695388 is 88359646.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270573 + ... + 270811.

It is an arithmetic number, because the mean of its divisors is an integer number (2553600).

Almost surely, 2^64695388 is an apocalyptic number.

It is an amenable number.

64695388 is a deficient number, since it is larger than the sum of its proper divisors (57877412).

64695388 is a wasteful number, since it uses less digits than its factorization.

64695388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 368 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 64695388 is about 8043.3443293197. The cubic root of 64695388 is about 401.4435094349.

The spelling of 64695388 in words is "sixty-four million, six hundred ninety-five thousand, three hundred eighty-eight".