746657172 has 18 divisors (see below), whose sum is σ = 1887383498. Its totient is φ = 248885712.

The previous prime is 746657161. The next prime is 746657189. The reversal of 746657172 is 271756647.

746657172 is a `hidden beast` number, since 7 + 4 + 6 + 6 + 571 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 512750736 + 233906436 = 22644^2 + 15294^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10370203 + ... + 10370274.

Almost surely, 2^746657172 is an apocalyptic number.

It is an amenable number.

746657172 is an abundant number, since it is smaller than the sum of its proper divisors (1140726326).

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

746657172 is a wasteful number, since it uses less digits than its factorization.

746657172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20740487 (or 20740482 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 746657172 is about 27325.0283073961. The cubic root of 746657172 is about 907.2084367188.

The spelling of 746657172 in words is "seven hundred forty-six million, six hundred fifty-seven thousand, one hundred seventy-two".