855701997 has 32 divisors (see below), whose sum is σ = 1194676224. Its totient is φ = 544320000.

The previous prime is 855701983. The next prime is 855702007. The reversal of 855701997 is 799107558.

It is not a de Polignac number, because 855701997 - 2⁶ = 855701933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855701947) 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, 1423497 + ... + 1424097.

It is an arithmetic number, because the mean of its divisors is an integer number (37333632).

Almost surely, 2^855701997 is an apocalyptic number.

It is an amenable number.

855701997 is a deficient number, since it is larger than the sum of its proper divisors (338974227).

855701997 is a wasteful number, since it uses less digits than its factorization.

855701997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869.

The product of its (nonzero) digits is 793800, while the sum is 51.

The square root of 855701997 is about 29252.3844669114. The cubic root of 855701997 is about 949.3816833379.

The spelling of 855701997 in words is "eight hundred fifty-five million, seven hundred one thousand, nine hundred ninety-seven".