694737489 has 16 divisors (see below), whose sum is σ = 984732480. Its totient is φ = 434433600.

The previous prime is 694737481. The next prime is 694737499. The reversal of 694737489 is 984737496.

It is not a de Polignac number, because 694737489 - 2³ = 694737481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (694737481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54582 + ... + 66095.

It is an arithmetic number, because the mean of its divisors is an integer number (61545780).

Almost surely, 2^694737489 is an apocalyptic number.

It is an amenable number.

694737489 is a deficient number, since it is larger than the sum of its proper divisors (289994991).

694737489 is a wasteful number, since it uses less digits than its factorization.

694737489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120800.

The product of its digits is 9144576, while the sum is 57.

The square root of 694737489 is about 26357.8733777974. The cubic root of 694737489 is about 885.6733526584.

The spelling of 694737489 in words is "six hundred ninety-four million, seven hundred thirty-seven thousand, four hundred eighty-nine".