690865140009 has 64 divisors (see below), whose sum is σ = 1074704007168. Its totient is φ = 390555950400.

The previous prime is 690865140001. The next prime is 690865140019. The reversal of 690865140009 is 900041568096.

It is not a de Polignac number, because 690865140009 - 2³ = 690865140001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690865140009.

It is not an unprimeable number, because it can be changed into a prime (690865140001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20577174 + ... + 20610720.

It is an arithmetic number, because the mean of its divisors is an integer number (16792250112).

Almost surely, 2^690865140009 is an apocalyptic number.

690865140009 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

690865140009 is a deficient number, since it is larger than the sum of its proper divisors (383838867159).

690865140009 is a wasteful number, since it uses less digits than its factorization.

690865140009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34258.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 690865140009 in words is "six hundred ninety billion, eight hundred sixty-five million, one hundred forty thousand, nine".