66900802 has 4 divisors (see below), whose sum is σ = 100351206. Its totient is φ = 33450400.

The previous prime is 66900751. The next prime is 66900817. The reversal of 66900802 is 20800966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66896041 + 4761 = 8179^2 + 69^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16725199 + ... + 16725202.

Almost surely, 2^66900802 is an apocalyptic number.

66900802 is a deficient number, since it is larger than the sum of its proper divisors (33450404).

66900802 is a wasteful number, since it uses less digits than its factorization.

66900802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33450403.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 66900802 is about 8179.2910450723. The cubic root of 66900802 is about 405.9542645465.

The spelling of 66900802 in words is "sixty-six million, nine hundred thousand, eight hundred two".