690969779400 has 48 divisors (see below), whose sum is σ = 2142006318000. Its totient is φ = 184258607680.

The previous prime is 690969779347. The next prime is 690969779407. The reversal of 690969779400 is 4977969096.

It is not an unprimeable number, because it can be changed into a prime (690969779407) 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 11 ways as a sum of consecutive naturals, for example, 575807550 + ... + 575808749.

It is an arithmetic number, because the mean of its divisors is an integer number (44625131625).

Almost surely, 2^690969779400 is an apocalyptic number.

690969779400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

690969779400 is an abundant number, since it is smaller than the sum of its proper divisors (1451036538600).

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

690969779400 is a wasteful number, since it uses less digits than its factorization.

690969779400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151616318 (or 1151616309 counting only the distinct ones).

The product of its (nonzero) digits is 46294416, while the sum is 66.

The spelling of 690969779400 in words is "six hundred ninety billion, nine hundred sixty-nine million, seven hundred seventy-nine thousand, four hundred".