630890618 has 8 divisors (see below), whose sum is σ = 955180512. Its totient is φ = 312497116.

The previous prime is 630890591. The next prime is 630890653. The reversal of 630890618 is 816098036.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1473830 + ... + 1474257.

It is an arithmetic number, because the mean of its divisors is an integer number (119397564).

Almost surely, 2^630890618 is an apocalyptic number.

630890618 is a deficient number, since it is larger than the sum of its proper divisors (324289894).

630890618 is a wasteful number, since it uses less digits than its factorization.

630890618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948196.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 630890618 is about 25117.5360654663. The cubic root of 630890618 is about 857.6656625026.

The spelling of 630890618 in words is "six hundred thirty million, eight hundred ninety thousand, six hundred eighteen".