64663370 has 16 divisors (see below), whose sum is σ = 116552520. Its totient is φ = 25830144.

The previous prime is 64663369. The next prime is 64663387. The reversal of 64663370 is 7336646.

It can be written as a sum of positive squares in 4 ways, for example, as 50367409 + 14295961 = 7097^2 + 3781^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64663370.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4094 + ... + 12086.

Almost surely, 2^64663370 is an apocalyptic number.

64663370 is a deficient number, since it is larger than the sum of its proper divisors (51889150).

64663370 is a wasteful number, since it uses less digits than its factorization.

64663370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8809.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 64663370 is about 8041.3537417527. The cubic root of 64663370 is about 401.3772731870.

The spelling of 64663370 in words is "sixty-four million, six hundred sixty-three thousand, three hundred seventy".