630339645 has 16 divisors (see below), whose sum is σ = 1086124032. Its totient is φ = 310320960.

The previous prime is 630339637. The next prime is 630339673. The reversal of 630339645 is 546933036.

It is not a de Polignac number, because 630339645 - 2³ = 630339637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1616061 + ... + 1616450.

It is an arithmetic number, because the mean of its divisors is an integer number (67882752).

Almost surely, 2^630339645 is an apocalyptic number.

630339645 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

630339645 is a deficient number, since it is larger than the sum of its proper divisors (455784387).

630339645 is a wasteful number, since it uses less digits than its factorization.

630339645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232532.

The product of its (nonzero) digits is 174960, while the sum is 39.

The square root of 630339645 is about 25106.5657747132. The cubic root of 630339645 is about 857.4159159591.

The spelling of 630339645 in words is "six hundred thirty million, three hundred thirty-nine thousand, six hundred forty-five".