670156655 has 8 divisors (see below), whose sum is σ = 919072032. Its totient is φ = 459535968.

The previous prime is 670156639. The next prime is 670156673. The reversal of 670156655 is 556651076.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 670156655 - 2⁴ = 670156639 is a prime.

It is a Duffinian number.

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, 9573632 + ... + 9573701.

It is an arithmetic number, because the mean of its divisors is an integer number (114884004).

Almost surely, 2^670156655 is an apocalyptic number.

670156655 is a deficient number, since it is larger than the sum of its proper divisors (248915377).

670156655 is a wasteful number, since it uses less digits than its factorization.

670156655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19147345.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 670156655 is about 25887.3840895522. The cubic root of 670156655 is about 875.1022052042.

The spelling of 670156655 in words is "six hundred seventy million, one hundred fifty-six thousand, six hundred fifty-five".