690271465 has 16 divisors (see below), whose sum is σ = 892600128. Its totient is φ = 509420736.

The previous prime is 690271457. The next prime is 690271481. The reversal of 690271465 is 564172096.

It is a cyclic number.

It is not a de Polignac number, because 690271465 - 2³ = 690271457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173994 + ... + 177916.

It is an arithmetic number, because the mean of its divisors is an integer number (55787508).

Almost surely, 2^690271465 is an apocalyptic number.

690271465 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

690271465 is a deficient number, since it is larger than the sum of its proper divisors (202328663).

690271465 is a wasteful number, since it uses less digits than its factorization.

690271465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6648.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 690271465 is about 26273.0178129578. The cubic root of 690271465 is about 883.7714618604.

The spelling of 690271465 in words is "six hundred ninety million, two hundred seventy-one thousand, four hundred sixty-five".