694308426 has 32 divisors (see below), whose sum is σ = 1638187008. Its totient is φ = 191974320.

The previous prime is 694308409. The next prime is 694308481. The reversal of 694308426 is 624803496.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 265330 + ... + 267933.

It is an arithmetic number, because the mean of its divisors is an integer number (51193344).

Almost surely, 2^694308426 is an apocalyptic number.

694308426 is an abundant number, since it is smaller than the sum of its proper divisors (943878582).

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

694308426 is a wasteful number, since it uses less digits than its factorization.

694308426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533306.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 694308426 is about 26349.7329398231. The cubic root of 694308426 is about 885.4909874108.

The spelling of 694308426 in words is "six hundred ninety-four million, three hundred eight thousand, four hundred twenty-six".