630977769 has 10 divisors (see below), whose sum is σ = 942571850. Its totient is φ = 420651792.

The previous prime is 630977759. The next prime is 630977803. The reversal of 630977769 is 967779036.

It can be written as a sum of positive squares in only one way, i.e., 590490000 + 40487769 = 24300^2 + 6363^2 .

It is not a de Polignac number, because 630977769 - 2²³ = 622589161 is a prime.

It is a super-2 number, since 2×630977769² = 796265889944434722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630977719) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3894844 + ... + 3895005.

It is an arithmetic number, because the mean of its divisors is an integer number (94257185).

Almost surely, 2^630977769 is an apocalyptic number.

It is an amenable number.

630977769 is a deficient number, since it is larger than the sum of its proper divisors (311594081).

630977769 is an equidigital number, since it uses as much as digits as its factorization.

630977769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7789861 (or 7789852 counting only the distinct ones).

The product of its (nonzero) digits is 3000564, while the sum is 54.

The square root of 630977769 is about 25119.2708691952. The cubic root of 630977769 is about 857.7051532249.

The spelling of 630977769 in words is "six hundred thirty million, nine hundred seventy-seven thousand, seven hundred sixty-nine".