694422720 has 280 divisors, whose sum is σ = 2510844864. Its totient is φ = 182145024.

The previous prime is 694422713. The next prime is 694422787. The reversal of 694422720 is 27224496.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1891977 + ... + 1892343.

Almost surely, 2^694422720 is an apocalyptic number.

694422720 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 694422720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255422432).

694422720 is an abundant number, since it is smaller than the sum of its proper divisors (1816422144).

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

694422720 is a wasteful number, since it uses less digits than its factorization.

694422720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 694422720 is about 26351.9016391607. The cubic root of 694422720 is about 885.5395732891.

The spelling of 694422720 in words is "six hundred ninety-four million, four hundred twenty-two thousand, seven hundred twenty".