631620814 has 8 divisors (see below), whose sum is σ = 1033561368. Its totient is φ = 287100360.

The previous prime is 631620811. The next prime is 631620853. The reversal of 631620814 is 418026136.

It is a happy number.

631620814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631620811) 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, 14354997 + ... + 14355040.

It is an arithmetic number, because the mean of its divisors is an integer number (129195171).

Almost surely, 2^631620814 is an apocalyptic number.

631620814 is a deficient number, since it is larger than the sum of its proper divisors (401940554).

631620814 is a wasteful number, since it uses less digits than its factorization.

631620814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28710050.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 631620814 is about 25132.0674438057. The cubic root of 631620814 is about 857.9964237892.

The spelling of 631620814 in words is "six hundred thirty-one million, six hundred twenty thousand, eight hundred fourteen".