66251796 has 48 divisors (see below), whose sum is σ = 166992000. Its totient is φ = 20322432.

The previous prime is 66251767. The next prime is 66251819. The reversal of 66251796 is 69715266.

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, 93090 + ... + 93798.

It is an arithmetic number, because the mean of its divisors is an integer number (3479000).

Almost surely, 2^66251796 is an apocalyptic number.

It is an amenable number.

66251796 is an abundant number, since it is smaller than the sum of its proper divisors (100740204).

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

66251796 is a wasteful number, since it uses less digits than its factorization.

66251796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328 (or 1326 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 66251796 is about 8139.5206247051. The cubic root of 66251796 is about 404.6372731581.

The spelling of 66251796 in words is "sixty-six million, two hundred fifty-one thousand, seven hundred ninety-six".