670629619 has 4 divisors (see below), whose sum is σ = 731595960. Its totient is φ = 609663280.

The previous prime is 670629587. The next prime is 670629623. The reversal of 670629619 is 916926076.

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 670629619 - 2⁵ = 670629587 is a prime.

It is a super-2 number, since 2×670629619² = 899488171760170322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670629649) 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, 30483154 + ... + 30483175.

It is an arithmetic number, because the mean of its divisors is an integer number (182898990).

Almost surely, 2^670629619 is an apocalyptic number.

670629619 is a deficient number, since it is larger than the sum of its proper divisors (60966341).

670629619 is a wasteful number, since it uses less digits than its factorization.

670629619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60966340.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 670629619 is about 25896.5175071862. The cubic root of 670629619 is about 875.3080249959.

The spelling of 670629619 in words is "six hundred seventy million, six hundred twenty-nine thousand, six hundred nineteen".