690272831 has 8 divisors (see below), whose sum is σ = 730295280. Its totient is φ = 650619648.

The previous prime is 690272827. The next prime is 690272837. The reversal of 690272831 is 138272096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690272831 - 2² = 690272827 is a prime.

It is a super-2 number, since 2×690272831² = 952953162433509122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690272837) 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, 88466 + ... + 95951.

It is an arithmetic number, because the mean of its divisors is an integer number (91286910).

Almost surely, 2^690272831 is an apocalyptic number.

690272831 is a deficient number, since it is larger than the sum of its proper divisors (40022449).

690272831 is a wasteful number, since it uses less digits than its factorization.

690272831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184633.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 690272831 is about 26273.0438091973. The cubic root of 690272831 is about 883.7720448345.

The spelling of 690272831 in words is "six hundred ninety million, two hundred seventy-two thousand, eight hundred thirty-one".