690573406 has 32 divisors (see below), whose sum is σ = 1077753600. Its totient is φ = 331685760.

The previous prime is 690573353. The next prime is 690573407. The reversal of 690573406 is 604375096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690573407) 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 15 ways as a sum of consecutive naturals, for example, 1164246 + ... + 1164838.

It is an arithmetic number, because the mean of its divisors is an integer number (33679800).

Almost surely, 2^690573406 is an apocalyptic number.

690573406 is a deficient number, since it is larger than the sum of its proper divisors (387180194).

690573406 is a wasteful number, since it uses less digits than its factorization.

690573406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 690573406 is about 26278.7634031741. The cubic root of 690573406 is about 883.9003038951.

The spelling of 690573406 in words is "six hundred ninety million, five hundred seventy-three thousand, four hundred six".