855701998 has 4 divisors (see below), whose sum is σ = 1283553000. Its totient is φ = 427850998.

The previous prime is 855701983. The next prime is 855702007. The reversal of 855701998 is 899107558.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×855701998³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213925498 + ... + 213925501.

It is an arithmetic number, because the mean of its divisors is an integer number (320888250).

Almost surely, 2^855701998 is an apocalyptic number.

855701998 is a deficient number, since it is larger than the sum of its proper divisors (427851002).

855701998 is a wasteful number, since it uses less digits than its factorization.

855701998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427851001.

The product of its (nonzero) digits is 907200, while the sum is 52.

The square root of 855701998 is about 29252.3844840040. The cubic root of 855701998 is about 949.3816837077.

The spelling of 855701998 in words is "eight hundred fifty-five million, seven hundred one thousand, nine hundred ninety-eight".