670144517 has 16 divisors (see below), whose sum is σ = 773553792. Its totient is φ = 568676160.

The previous prime is 670144511. The next prime is 670144523. The reversal of 670144517 is 715441076.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (670144511) and next prime (670144523).

It is a cyclic number.

It is not a de Polignac number, because 670144517 - 2¹⁰ = 670143493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670144511) 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, 671663 + ... + 672659.

It is an arithmetic number, because the mean of its divisors is an integer number (48347112).

Almost surely, 2^670144517 is an apocalyptic number.

It is an amenable number.

670144517 is a deficient number, since it is larger than the sum of its proper divisors (103409275).

670144517 is a wasteful number, since it uses less digits than its factorization.

670144517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 670144517 is about 25887.1496499711. The cubic root of 670144517 is about 875.0969218352.

The spelling of 670144517 in words is "six hundred seventy million, one hundred forty-four thousand, five hundred seventeen".