618710961 has 32 divisors (see below), whose sum is σ = 940566528. Its totient is φ = 358424640.

The previous prime is 618710959. The next prime is 618711053. The reversal of 618710961 is 169017816.

It is not a de Polignac number, because 618710961 - 2¹ = 618710959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (618710921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62055 + ... + 71331.

It is an arithmetic number, because the mean of its divisors is an integer number (29392704).

Almost surely, 2^618710961 is an apocalyptic number.

It is an amenable number.

618710961 is a deficient number, since it is larger than the sum of its proper divisors (321855567).

618710961 is a wasteful number, since it uses less digits than its factorization.

618710961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9381.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 618710961 is about 24873.9012018622. The cubic root of 618710961 is about 852.1105388441.

The spelling of 618710961 in words is "six hundred eighteen million, seven hundred ten thousand, nine hundred sixty-one".