65939672 has 8 divisors (see below), whose sum is σ = 123636900. Its totient is φ = 32969832.

The previous prime is 65939611. The next prime is 65939677. The reversal of 65939672 is 27693956.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65939677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4121222 + ... + 4121237.

Almost surely, 2^65939672 is an apocalyptic number.

It is an amenable number.

65939672 is a deficient number, since it is larger than the sum of its proper divisors (57697228).

65939672 is a wasteful number, since it uses less digits than its factorization.

65939672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8242465 (or 8242461 counting only the distinct ones).

The product of its digits is 612360, while the sum is 47.

The square root of 65939672 is about 8120.3246240529. The cubic root of 65939672 is about 404.0008332499. Note that the first 3 decimals are identical.

The spelling of 65939672 in words is "sixty-five million, nine hundred thirty-nine thousand, six hundred seventy-two".