690633266 has 16 divisors (see below), whose sum is σ = 1046637504. Its totient is φ = 341771664.

The previous prime is 690633241. The next prime is 690633311. The reversal of 690633266 is 662336096.

It is an unprimeable number.

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, 78401 + ... + 86763.

It is an arithmetic number, because the mean of its divisors is an integer number (65414844).

Almost surely, 2^690633266 is an apocalyptic number.

690633266 is a deficient number, since it is larger than the sum of its proper divisors (356004238).

690633266 is a wasteful number, since it uses less digits than its factorization.

690633266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8785.

The product of its (nonzero) digits is 209952, while the sum is 41.

The square root of 690633266 is about 26279.9023209752. The cubic root of 690633266 is about 883.9258424514.

The spelling of 690633266 in words is "six hundred ninety million, six hundred thirty-three thousand, two hundred sixty-six".