66772360 has 16 divisors (see below), whose sum is σ = 150237900. Its totient is φ = 26708928.

The previous prime is 66772337. The next prime is 66772367. The reversal of 66772360 is 6327766.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66683556 + 88804 = 8166^2 + 298^2 .

It is not an unprimeable number, because it can be changed into a prime (66772367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834615 + ... + 834694.

Almost surely, 2^66772360 is an apocalyptic number.

It is an amenable number.

66772360 is an abundant number, since it is smaller than the sum of its proper divisors (83465540).

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

66772360 is a wasteful number, since it uses less digits than its factorization.

66772360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669320 (or 1669316 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 66772360 is about 8171.4356143826. The cubic root of 66772360 is about 405.6943026309.

The spelling of 66772360 in words is "sixty-six million, seven hundred seventy-two thousand, three hundred sixty".