620330907 has 16 divisors (see below), whose sum is σ = 986365440. Its totient is φ = 339062592.

The previous prime is 620330869. The next prime is 620330917. The reversal of 620330907 is 709033026.

It is a happy number.

It is not a de Polignac number, because 620330907 - 2⁸ = 620330651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620330917) 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, 641682 + ... + 642647.

It is an arithmetic number, because the mean of its divisors is an integer number (61647840).

Almost surely, 2^620330907 is an apocalyptic number.

620330907 is a deficient number, since it is larger than the sum of its proper divisors (366034533).

620330907 is a wasteful number, since it uses less digits than its factorization.

620330907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284362.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 620330907 is about 24906.4430820621. The cubic root of 620330907 is about 852.8535729748.

The spelling of 620330907 in words is "six hundred twenty million, three hundred thirty thousand, nine hundred seven".