689407630 has 32 divisors (see below), whose sum is σ = 1315738080. Its totient is φ = 259184640.

The previous prime is 689407597. The next prime is 689407637. The reversal of 689407630 is 36704986.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689407637) 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, 143670 + ... + 148390.

It is an arithmetic number, because the mean of its divisors is an integer number (41116815).

Almost surely, 2^689407630 is an apocalyptic number.

689407630 is a deficient number, since it is larger than the sum of its proper divisors (626330450).

689407630 is a wasteful number, since it uses less digits than its factorization.

689407630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5604.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 689407630 is about 26256.5730818018. The cubic root of 689407630 is about 883.4026449311.

The spelling of 689407630 in words is "six hundred eighty-nine million, four hundred seven thousand, six hundred thirty".