630975801 has 4 divisors (see below), whose sum is σ = 841301072. Its totient is φ = 420650532.

The previous prime is 630975749. The next prime is 630975803. The reversal of 630975801 is 108579036.

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 not a de Polignac number, because 630975801 - 2⁷ = 630975673 is a prime.

It is a super-2 number, since 2×630975801² = 796260922895183202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 630975801.

It is not an unprimeable number, because it can be changed into a prime (630975803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105162631 + ... + 105162636.

It is an arithmetic number, because the mean of its divisors is an integer number (210325268).

Almost surely, 2^630975801 is an apocalyptic number.

It is an amenable number.

630975801 is a deficient number, since it is larger than the sum of its proper divisors (210325271).

630975801 is a wasteful number, since it uses less digits than its factorization.

630975801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210325270.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 630975801 is about 25119.2316960531. The cubic root of 630975801 is about 857.7042615054.

The spelling of 630975801 in words is "six hundred thirty million, nine hundred seventy-five thousand, eight hundred one".