671670007 has 16 divisors (see below), whose sum is σ = 730308960. Its totient is φ = 615693312.

The previous prime is 671669987. The next prime is 671670031. The reversal of 671670007 is 700076176.

It is a cyclic number.

It is not a de Polignac number, because 671670007 - 2⁷ = 671669879 is a prime.

It is a super-2 number, since 2×671670007² = 902281196606760098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671670047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68943 + ... + 78079.

It is an arithmetic number, because the mean of its divisors is an integer number (45644310).

Almost surely, 2^671670007 is an apocalyptic number.

671670007 is a deficient number, since it is larger than the sum of its proper divisors (58638953).

671670007 is a wasteful number, since it uses less digits than its factorization.

671670007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9282.

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 671670007 is about 25916.5971338831. The cubic root of 671670007 is about 875.7604304293.

The spelling of 671670007 in words is "six hundred seventy-one million, six hundred seventy thousand, seven".