690265028 has 24 divisors (see below), whose sum is σ = 1224948480. Its totient is φ = 340292160.

The previous prime is 690265027. The next prime is 690265031. The reversal of 690265028 is 820562096.

It is a junction number, because it is equal to n+sod(n) for n = 690264982 and 690265000.

It is not an unprimeable number, because it can be changed into a prime (690265027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376073 + ... + 377903.

It is an arithmetic number, because the mean of its divisors is an integer number (51039520).

Almost surely, 2^690265028 is an apocalyptic number.

It is an amenable number.

690265028 is a deficient number, since it is larger than the sum of its proper divisors (534683452).

690265028 is a wasteful number, since it uses less digits than its factorization.

690265028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107 (or 3105 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 690265028 is about 26272.8953105667. The cubic root of 690265028 is about 883.7687147023.

The spelling of 690265028 in words is "six hundred ninety million, two hundred sixty-five thousand, twenty-eight".