66319372 has 24 divisors (see below), whose sum is σ = 133126560. Its totient is φ = 28318080.

The previous prime is 66319369. The next prime is 66319381. The reversal of 66319372 is 27391366.

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, 3654 + ... + 12082.

It is an arithmetic number, because the mean of its divisors is an integer number (5546940).

Almost surely, 2^66319372 is an apocalyptic number.

It is an amenable number.

66319372 is an abundant number, since it is smaller than the sum of its proper divisors (66807188).

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

66319372 is a wasteful number, since it uses less digits than its factorization.

66319372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8721 (or 8719 counting only the distinct ones).

The product of its digits is 40824, while the sum is 37.

The square root of 66319372 is about 8143.6706711409. The cubic root of 66319372 is about 404.7748013888.

The spelling of 66319372 in words is "sixty-six million, three hundred nineteen thousand, three hundred seventy-two".