690259995 has 16 divisors (see below), whose sum is σ = 1227129120. Its totient is φ = 368138592.

The previous prime is 690259991. The next prime is 690260009. The reversal of 690259995 is 599952096.

It is not a de Polignac number, because 690259995 - 2² = 690259991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (690259991) by changing a digit.

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, 2556384 + ... + 2556653.

It is an arithmetic number, because the mean of its divisors is an integer number (76695570).

Almost surely, 2^690259995 is an apocalyptic number.

690259995 is a deficient number, since it is larger than the sum of its proper divisors (536869125).

690259995 is a wasteful number, since it uses less digits than its factorization.

690259995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113051 (or 5113045 counting only the distinct ones).

The product of its (nonzero) digits is 1968300, while the sum is 54.

The square root of 690259995 is about 26272.7995272677. The cubic root of 690259995 is about 883.7665667260.

The spelling of 690259995 in words is "six hundred ninety million, two hundred fifty-nine thousand, nine hundred ninety-five".