66854792 has 8 divisors (see below), whose sum is σ = 125352750. Its totient is φ = 33427392.

The previous prime is 66854791. The next prime is 66854861. The reversal of 66854792 is 29745866.

It can be written as a sum of positive squares in only one way, i.e., 54081316 + 12773476 = 7354^2 + 3574^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (66854791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4178417 + ... + 4178432.

Almost surely, 2^66854792 is an apocalyptic number.

It is an amenable number.

66854792 is a deficient number, since it is larger than the sum of its proper divisors (58497958).

66854792 is a wasteful number, since it uses less digits than its factorization.

66854792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8356855 (or 8356851 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 66854792 is about 8176.4779703733. The cubic root of 66854792 is about 405.8611802654.

The spelling of 66854792 in words is "sixty-six million, eight hundred fifty-four thousand, seven hundred ninety-two".