699431040 has 768 divisors, whose sum is σ = 3207859200. Its totient is φ = 136028160.

The previous prime is 699431009. The next prime is 699431069. The reversal of 699431040 is 40134996.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 699430986 and 699431004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8426839 + ... + 8426921.

It is an arithmetic number, because the mean of its divisors is an integer number (4176900).

Almost surely, 2^699431040 is an apocalyptic number.

699431040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699431040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1603929600).

699431040 is an abundant number, since it is smaller than the sum of its proper divisors (2508428160).

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

699431040 is a wasteful number, since it uses less digits than its factorization.

699431040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 699431040 is about 26446.7585915552. The cubic root of 699431040 is about 887.6633737458.

The spelling of 699431040 in words is "six hundred ninety-nine million, four hundred thirty-one thousand, forty".