855618040 has 32 divisors (see below), whose sum is σ = 1926207360. Its totient is φ = 342057600.

The previous prime is 855618017. The next prime is 855618077. The reversal of 855618040 is 40816558.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

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, 84025 + ... + 93655.

It is an arithmetic number, because the mean of its divisors is an integer number (60193980).

Almost surely, 2^855618040 is an apocalyptic number.

It is an amenable number.

855618040 is an abundant number, since it is smaller than the sum of its proper divisors (1070589320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855618040 is a wasteful number, since it uses less digits than its factorization.

855618040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11863 (or 11859 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 855618040 is about 29250.9493863020. The cubic root of 855618040 is about 949.3506328689.

The spelling of 855618040 in words is "eight hundred fifty-five million, six hundred eighteen thousand, forty".