690480831 has 8 divisors (see below), whose sum is σ = 925005184. Its totient is φ = 458138520.

The previous prime is 690480811. The next prime is 690480851. The reversal of 690480831 is 138084096.

It is an interprime number because it is at equal distance from previous prime (690480811) and next prime (690480851).

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

It is not a de Polignac number, because 690480831 - 2¹³ = 690472639 is a prime.

It is a super-2 number, since 2×690480831² = 953527555956901122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 690480831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690480811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544771 + ... + 546036.

It is an arithmetic number, because the mean of its divisors is an integer number (115625648).

Almost surely, 2^690480831 is an apocalyptic number.

690480831 is a deficient number, since it is larger than the sum of its proper divisors (234524353).

690480831 is a wasteful number, since it uses less digits than its factorization.

690480831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091021.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 690480831 is about 26277.0019408608. The cubic root of 690480831 is about 883.8608049673.

The spelling of 690480831 in words is "six hundred ninety million, four hundred eighty thousand, eight hundred thirty-one".