617632942 has 12 divisors (see below), whose sum is σ = 929995848. Its totient is φ = 307638800.

The previous prime is 617632931. The next prime is 617632987. The reversal of 617632942 is 249236716.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 617632895 and 617632904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155967 + ... + 159877.

It is an arithmetic number, because the mean of its divisors is an integer number (77499654).

Almost surely, 2^617632942 is an apocalyptic number.

617632942 is a deficient number, since it is larger than the sum of its proper divisors (312362906).

617632942 is an equidigital number, since it uses as much as digits as its factorization.

617632942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475 (or 4194 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 617632942 is about 24852.2220736899. Note that the first 3 decimals coincide. The cubic root of 617632942 is about 851.6153558845.

The spelling of 617632942 in words is "six hundred seventeen million, six hundred thirty-two thousand, nine hundred forty-two".