670538859 has 4 divisors (see below), whose sum is σ = 894051816. Its totient is φ = 447025904.

The previous prime is 670538857. The next prime is 670538863. The reversal of 670538859 is 958835076.

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

It is a cyclic number.

It is not a de Polignac number, because 670538859 - 2¹ = 670538857 is a prime.

It is a super-2 number, since 2×670538859² = 899244722858043762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (670538857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111756474 + ... + 111756479.

It is an arithmetic number, because the mean of its divisors is an integer number (223512954).

Almost surely, 2^670538859 is an apocalyptic number.

670538859 is a deficient number, since it is larger than the sum of its proper divisors (223512957).

670538859 is a wasteful number, since it uses less digits than its factorization.

670538859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223512956.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The square root of 670538859 is about 25894.7650887202. The cubic root of 670538859 is about 875.2685364624.

The spelling of 670538859 in words is "six hundred seventy million, five hundred thirty-eight thousand, eight hundred fifty-nine".