699225378 has 16 divisors (see below), whose sum is σ = 1401476736. Its totient is φ = 232570800.

The previous prime is 699225361. The next prime is 699225379. The reversal of 699225378 is 873522996.

It is a super-2 number, since 2×699225378² = 977832258478485768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 699225378.

It is not an unprimeable number, because it can be changed into a prime (699225379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123073 + ... + 128628.

It is an arithmetic number, because the mean of its divisors is an integer number (87592296).

Almost surely, 2^699225378 is an apocalyptic number.

699225378 is an abundant number, since it is smaller than the sum of its proper divisors (702251358).

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

699225378 is a wasteful number, since it uses less digits than its factorization.

699225378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252169.

The product of its digits is 1632960, while the sum is 51.

The square root of 699225378 is about 26442.8700787188. The cubic root of 699225378 is about 887.5763618220.

The spelling of 699225378 in words is "six hundred ninety-nine million, two hundred twenty-five thousand, three hundred seventy-eight".