690177252 has 12 divisors (see below), whose sum is σ = 1610413616. Its totient is φ = 230059080.

The previous prime is 690177247. The next prime is 690177311. The reversal of 690177252 is 252771096.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 690177252.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28757374 + ... + 28757397.

Almost surely, 2^690177252 is an apocalyptic number.

It is an amenable number.

690177252 is an abundant number, since it is smaller than the sum of its proper divisors (920236364).

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

690177252 is a wasteful number, since it uses less digits than its factorization.

690177252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57514778 (or 57514776 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 690177252 is about 26271.2247906336. The cubic root of 690177252 is about 883.7312522939.

The spelling of 690177252 in words is "six hundred ninety million, one hundred seventy-seven thousand, two hundred fifty-two".