612981902 has 8 divisors (see below), whose sum is σ = 990201576. Its totient is φ = 282914712.

The previous prime is 612981829. The next prime is 612981907. The reversal of 612981902 is 209189216.

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 (612981907) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11788088 + ... + 11788139.

It is an arithmetic number, because the mean of its divisors is an integer number (123775197).

Almost surely, 2^612981902 is an apocalyptic number.

612981902 is a deficient number, since it is larger than the sum of its proper divisors (377219674).

612981902 is a wasteful number, since it uses less digits than its factorization.

612981902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23576242.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 612981902 is about 24758.4713179146. The cubic root of 612981902 is about 849.4722915953.

The spelling of 612981902 in words is "six hundred twelve million, nine hundred eighty-one thousand, nine hundred two".