630020345 has 4 divisors (see below), whose sum is σ = 756024420. Its totient is φ = 504016272.

The previous prime is 630020329. The next prime is 630020353. The reversal of 630020345 is 543020036.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 423207184 + 206813161 = 20572^2 + 14381^2 .

It is a cyclic number.

It is not a de Polignac number, because 630020345 - 2⁴ = 630020329 is a prime.

It is a super-2 number, since 2×630020345² = 793851270227838050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 630020345.

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, 63002030 + ... + 63002039.

It is an arithmetic number, because the mean of its divisors is an integer number (189006105).

Almost surely, 2^630020345 is an apocalyptic number.

It is an amenable number.

630020345 is a deficient number, since it is larger than the sum of its proper divisors (126004075).

630020345 is a wasteful number, since it uses less digits than its factorization.

630020345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126004074.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 630020345 is about 25100.2060748513. The cubic root of 630020345 is about 857.2711161707.

The spelling of 630020345 in words is "six hundred thirty million, twenty thousand, three hundred forty-five".