699431136 has 96 divisors (see below), whose sum is σ = 1991612448. Its totient is φ = 214056960.

The previous prime is 699431107. The next prime is 699431147. The reversal of 699431136 is 631134996.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 61686 + ... + 72138.

It is an arithmetic number, because the mean of its divisors is an integer number (20745963).

Almost surely, 2^699431136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699431136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995806224).

699431136 is an abundant number, since it is smaller than the sum of its proper divisors (1292181312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

699431136 is a wasteful number, since it uses less digits than its factorization.

699431136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10524 (or 10516 counting only the distinct ones).

The product of its digits is 104976, while the sum is 42.

The square root of 699431136 is about 26446.7604065224. The cubic root of 699431136 is about 887.6634143577.

The spelling of 699431136 in words is "six hundred ninety-nine million, four hundred thirty-one thousand, one hundred thirty-six".