630977 has 4 divisors (see below), whose sum is σ = 639936. Its totient is φ = 622020.

The previous prime is 630967. The next prime is 630997. The reversal of 630977 is 779036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 630977 - 2¹⁶ = 565441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4373 + ... + 4514.

It is an arithmetic number, because the mean of its divisors is an integer number (159984).

2⁶³⁰⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

630977 is a deficient number, since it is larger than the sum of its proper divisors (8959).

630977 is an equidigital number, since it uses as much as digits as its factorization.

630977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8958.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 630977 is about 794.3406070446. The cubic root of 630977 is about 85.7704804784.

The spelling of 630977 in words is "six hundred thirty thousand, nine hundred seventy-seven".