670684955 has 4 divisors (see below), whose sum is σ = 804821952. Its totient is φ = 536547960.

The previous prime is 670684939. The next prime is 670684967. The reversal of 670684955 is 559486076.

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

It is not a de Polignac number, because 670684955 - 2⁴ = 670684939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67068491 + ... + 67068500.

It is an arithmetic number, because the mean of its divisors is an integer number (201205488).

Almost surely, 2^670684955 is an apocalyptic number.

670684955 is a deficient number, since it is larger than the sum of its proper divisors (134136997).

670684955 is a wasteful number, since it uses less digits than its factorization.

670684955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134136996.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The square root of 670684955 is about 25897.5858913529. The cubic root of 670684955 is about 875.3320992446.

The spelling of 670684955 in words is "six hundred seventy million, six hundred eighty-four thousand, nine hundred fifty-five".