690712052 has 12 divisors (see below), whose sum is σ = 1216752096. Its totient is φ = 343068600.

The previous prime is 690712037. The next prime is 690712081. The reversal of 690712052 is 250217096.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571178 + ... + 572385.

It is an arithmetic number, because the mean of its divisors is an integer number (101396008).

Almost surely, 2^690712052 is an apocalyptic number.

It is an amenable number.

690712052 is a deficient number, since it is larger than the sum of its proper divisors (526040044).

690712052 is a wasteful number, since it uses less digits than its factorization.

690712052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143718 (or 1143716 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 690712052 is about 26281.4012564018. The cubic root of 690712052 is about 883.9594533111.

The spelling of 690712052 in words is "six hundred ninety million, seven hundred twelve thousand, fifty-two".