618706478 has 16 divisors (see below), whose sum is σ = 1000940976. Its totient is φ = 285130560.

The previous prime is 618706447. The next prime is 618706493. The reversal of 618706478 is 874607816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338 + ... + 35178.

It is an arithmetic number, because the mean of its divisors is an integer number (62558811).

Almost surely, 2^618706478 is an apocalyptic number.

618706478 is a deficient number, since it is larger than the sum of its proper divisors (382234498).

618706478 is a wasteful number, since it uses less digits than its factorization.

618706478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35539.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 618706478 is about 24873.8110871656. The cubic root of 618706478 is about 852.1084807906.

The spelling of 618706478 in words is "six hundred eighteen million, seven hundred six thousand, four hundred seventy-eight".