690026134831 has 32 divisors (see below), whose sum is σ = 788578560000. Its totient is φ = 597661843680.

The previous prime is 690026134793. The next prime is 690026134843. The reversal of 690026134831 is 138431620096.

It is not a de Polignac number, because 690026134831 - 2²¹ = 690024037679 is a prime.

It is a super-2 number, since 2×690026134831² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690026134631) 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 31 ways as a sum of consecutive naturals, for example, 197204920 + ... + 197208418.

It is an arithmetic number, because the mean of its divisors is an integer number (24643080000).

Almost surely, 2^690026134831 is an apocalyptic number.

690026134831 is a deficient number, since it is larger than the sum of its proper divisors (98552425169).

690026134831 is a wasteful number, since it uses less digits than its factorization.

690026134831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6379.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 690026134831 in words is "six hundred ninety billion, twenty-six million, one hundred thirty-four thousand, eight hundred thirty-one".