71976630 has 32 divisors (see below), whose sum is σ = 188448768. Its totient is φ = 17448800.

The previous prime is 71976601. The next prime is 71976643. The reversal of 71976630 is 3667917.

It is a Curzon 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, 108726 + ... + 109385.

It is an arithmetic number, because the mean of its divisors is an integer number (5889024).

Almost surely, 2^71976630 is an apocalyptic number.

71976630 is an abundant number, since it is smaller than the sum of its proper divisors (116472138).

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

71976630 is a wasteful number, since it uses less digits than its factorization.

71976630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218132.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 71976630 is about 8483.9041720189. The cubic root of 71976630 is about 415.9717490369.

The spelling of 71976630 in words is "seventy-one million, nine hundred seventy-six thousand, six hundred thirty".