690231982 has 16 divisors (see below), whose sum is σ = 1133090352. Its totient is φ = 312736320.

The previous prime is 690231979. The next prime is 690231991. The reversal of 690231982 is 289132096.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 43233 + ... + 57004.

It is an arithmetic number, because the mean of its divisors is an integer number (70818147).

Almost surely, 2^690231982 is an apocalyptic number.

690231982 is a deficient number, since it is larger than the sum of its proper divisors (442858370).

690231982 is a wasteful number, since it uses less digits than its factorization.

690231982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100563.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 690231982 is about 26272.2664039477. The cubic root of 690231982 is about 883.7546111885.

The spelling of 690231982 in words is "six hundred ninety million, two hundred thirty-one thousand, nine hundred eighty-two".