696780090 has 32 divisors (see below), whose sum is σ = 1858080960. Its totient is φ = 185807952.

The previous prime is 696780083. The next prime is 696780107. The reversal of 696780090 is 90087696.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 15 ways as a sum of consecutive naturals, for example, 1290064 + ... + 1290603.

It is an arithmetic number, because the mean of its divisors is an integer number (58065030).

Almost surely, 2^696780090 is an apocalyptic number.

696780090 is an abundant number, since it is smaller than the sum of its proper divisors (1161300870).

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

696780090 is a wasteful number, since it uses less digits than its factorization.

696780090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580683 (or 2580677 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 696780090 is about 26396.5923937163. The cubic root of 696780090 is about 886.5404941978.

The spelling of 696780090 in words is "six hundred ninety-six million, seven hundred eighty thousand, ninety".