690080406 has 32 divisors (see below), whose sum is σ = 1393072128. Its totient is φ = 227884800.

The previous prime is 690080401. The next prime is 690080441. The reversal of 690080406 is 604080096.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690080401) 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, 352731 + ... + 354681.

It is an arithmetic number, because the mean of its divisors is an integer number (43533504).

Almost surely, 2^690080406 is an apocalyptic number.

690080406 is an abundant number, since it is smaller than the sum of its proper divisors (702991722).

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

690080406 is a wasteful number, since it uses less digits than its factorization.

690080406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 690080406 is about 26269.3815305957. The cubic root of 690080406 is about 883.6899151640.

The spelling of 690080406 in words is "six hundred ninety million, eighty thousand, four hundred six".