699511680 has 256 divisors, whose sum is σ = 2831846400. Its totient is φ = 159860736.

The previous prime is 699511679. The next prime is 699511693. The reversal of 699511680 is 86115996.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 31 ways as a sum of consecutive naturals, for example, 118069 + ... + 123851.

It is an arithmetic number, because the mean of its divisors is an integer number (11061900).

Almost surely, 2^699511680 is an apocalyptic number.

699511680 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 699511680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415923200).

699511680 is an abundant number, since it is smaller than the sum of its proper divisors (2132334720).

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

699511680 is a wasteful number, since it uses less digits than its factorization.

699511680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818 (or 5800 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 699511680 is about 26448.2831200817. The cubic root of 699511680 is about 887.6974864363.

It can be divided in two parts, 69951 and 1680, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 699511680 in words is "six hundred ninety-nine million, five hundred eleven thousand, six hundred eighty".