66251802 has 32 divisors (see below), whose sum is σ = 135965952. Its totient is φ = 21513024.

The previous prime is 66251767. The next prime is 66251819. The reversal of 66251802 is 20815266.

It is a self number, because there is not a number n which added to its sum of digits gives 66251802.

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, 49263 + ... + 50589.

It is an arithmetic number, because the mean of its divisors is an integer number (4248936).

Almost surely, 2^66251802 is an apocalyptic number.

66251802 is an abundant number, since it is smaller than the sum of its proper divisors (69714150).

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

66251802 is a wasteful number, since it uses less digits than its factorization.

66251802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 66251802 is about 8139.5209932772. The cubic root of 66251802 is about 404.6372853732.

The spelling of 66251802 in words is "sixty-six million, two hundred fifty-one thousand, eight hundred two".