690402312 has 32 divisors (see below), whose sum is σ = 1917784800. Its totient is φ = 230134032.

The previous prime is 690402289. The next prime is 690402337. The reversal of 690402312 is 213204096.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 7 ways as a sum of consecutive naturals, for example, 1597938 + ... + 1598369.

It is an arithmetic number, because the mean of its divisors is an integer number (59930775).

Almost surely, 2^690402312 is an apocalyptic number.

It is an amenable number.

690402312 is an abundant number, since it is smaller than the sum of its proper divisors (1227382488).

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

690402312 is a wasteful number, since it uses less digits than its factorization.

690402312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196322 (or 3196312 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 690402312 is about 26275.5078352446. The cubic root of 690402312 is about 883.8273005386.

The spelling of 690402312 in words is "six hundred ninety million, four hundred two thousand, three hundred twelve".