64995670 has 32 divisors (see below), whose sum is σ = 122601600. Its totient is φ = 24775296.

The previous prime is 64995653. The next prime is 64995673. The reversal of 64995670 is 7659946.

It is a self number, because there is not a number n which added to its sum of digits gives 64995670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64995673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21492 + ... + 24328.

It is an arithmetic number, because the mean of its divisors is an integer number (3831300).

Almost surely, 2^64995670 is an apocalyptic number.

64995670 is a deficient number, since it is larger than the sum of its proper divisors (57605930).

64995670 is a wasteful number, since it uses less digits than its factorization.

64995670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 64995670 is about 8061.9892086259. The cubic root of 64995670 is about 402.0636475876.

The spelling of 64995670 in words is "sixty-four million, nine hundred ninety-five thousand, six hundred seventy".