690956940 has 24 divisors (see below), whose sum is σ = 1934679600. Its totient is φ = 184255168.

The previous prime is 690956939. The next prime is 690956941. The reversal of 690956940 is 49659096.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (690956939) and next prime (690956941).

It is a self number, because there is not a number n which added to its sum of digits gives 690956940.

It is not an unprimeable number, because it can be changed into a prime (690956941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5757915 + ... + 5758034.

It is an arithmetic number, because the mean of its divisors is an integer number (80611650).

Almost surely, 2^690956940 is an apocalyptic number.

690956940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

690956940 is an abundant number, since it is smaller than the sum of its proper divisors (1243722660).

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

690956940 is a wasteful number, since it uses less digits than its factorization.

690956940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11515961 (or 11515959 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 690956940 is about 26286.0598036298. The cubic root of 690956940 is about 884.0639085537.

The spelling of 690956940 in words is "six hundred ninety million, nine hundred fifty-six thousand, nine hundred forty".