690161270 has 16 divisors (see below), whose sum is σ = 1244769120. Its totient is φ = 275513664.

The previous prime is 690161267. The next prime is 690161273. The reversal of 690161270 is 72161096.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (690161267) and next prime (690161273).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690161273) 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 7 ways as a sum of consecutive naturals, for example, 63575 + ... + 73634.

It is an arithmetic number, because the mean of its divisors is an integer number (77798070).

Almost surely, 2^690161270 is an apocalyptic number.

690161270 is a deficient number, since it is larger than the sum of its proper divisors (554607850).

690161270 is a wasteful number, since it uses less digits than its factorization.

690161270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137719.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 690161270 is about 26270.9206157683. The cubic root of 690161270 is about 883.7244309053.

The spelling of 690161270 in words is "six hundred ninety million, one hundred sixty-one thousand, two hundred seventy".