699649080 has 128 divisors (see below), whose sum is σ = 2268241920. Its totient is φ = 171624960.

The previous prime is 699649073. The next prime is 699649109. The reversal of 699649080 is 80946996.

699649080 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596895 + ... + 598065.

It is an arithmetic number, because the mean of its divisors is an integer number (17720640).

Almost surely, 2^699649080 is an apocalyptic number.

699649080 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 699649080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1134120960).

699649080 is an abundant number, since it is smaller than the sum of its proper divisors (1568592840).

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

699649080 is a wasteful number, since it uses less digits than its factorization.

699649080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 699649080 is about 26450.8805146445. The cubic root of 699649080 is about 887.7556039551.

The spelling of 699649080 in words is "six hundred ninety-nine million, six hundred forty-nine thousand, eighty".