690971252 has 24 divisors (see below), whose sum is σ = 1299930240. Its totient is φ = 320336640.

The previous prime is 690971251. The next prime is 690971261. The reversal of 690971252 is 252179096.

690971252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690971251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93149 + ... + 100292.

It is an arithmetic number, because the mean of its divisors is an integer number (54163760).

Almost surely, 2^690971252 is an apocalyptic number.

It is an amenable number.

690971252 is a deficient number, since it is larger than the sum of its proper divisors (608958988).

690971252 is a wasteful number, since it uses less digits than its factorization.

690971252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193511 (or 193509 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 690971252 is about 26286.3320377720. The cubic root of 690971252 is about 884.0700124725.

The spelling of 690971252 in words is "six hundred ninety million, nine hundred seventy-one thousand, two hundred fifty-two".