630869790 has 32 divisors (see below), whose sum is σ = 1535417856. Its totient is φ = 165861920.

The previous prime is 630869777. The next prime is 630869791. The reversal of 630869790 is 97968036.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630869791) 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, 145962 + ... + 150221.

It is an arithmetic number, because the mean of its divisors is an integer number (47981808).

Almost surely, 2^630869790 is an apocalyptic number.

630869790 is an abundant number, since it is smaller than the sum of its proper divisors (904548066).

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

630869790 is a wasteful number, since it uses less digits than its factorization.

630869790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296264.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 630869790 is about 25117.1214513128. The cubic root of 630869790 is about 857.6562241750.

The spelling of 630869790 in words is "six hundred thirty million, eight hundred sixty-nine thousand, seven hundred ninety".