699623206478 has 24 divisors (see below), whose sum is σ = 1221502829400. Its totient is φ = 299658795408.

The previous prime is 699623206453. The next prime is 699623206481. The reversal of 699623206478 is 874602326996.

It is a self number, because there is not a number n which added to its sum of digits gives 699623206478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1975148 + ... + 2302271.

It is an arithmetic number, because the mean of its divisors is an integer number (50895951225).

Almost surely, 2^699623206478 is an apocalyptic number.

699623206478 is a deficient number, since it is larger than the sum of its proper divisors (521879622922).

699623206478 is a wasteful number, since it uses less digits than its factorization.

699623206478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4279104 (or 4279097 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 62.

The spelling of 699623206478 in words is "six hundred ninety-nine billion, six hundred twenty-three million, two hundred six thousand, four hundred seventy-eight".