699669408 has 96 divisors (see below), whose sum is σ = 1997400384. Its totient is φ = 213553152.

The previous prime is 699669389. The next prime is 699669419. The reversal of 699669408 is 804966996.

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

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, 54591 + ... + 66177.

It is an arithmetic number, because the mean of its divisors is an integer number (20806254).

Almost surely, 2^699669408 is an apocalyptic number.

699669408 is a gapful number since it is divisible by the number (68) 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 699669408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (998700192).

699669408 is an abundant number, since it is smaller than the sum of its proper divisors (1297730976).

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

699669408 is a wasteful number, since it uses less digits than its factorization.

699669408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11654 (or 11646 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 57.

The square root of 699669408 is about 26451.2647712732. The cubic root of 699669408 is about 887.7642016562.

The spelling of 699669408 in words is "six hundred ninety-nine million, six hundred sixty-nine thousand, four hundred eight".