670501917 has 6 divisors (see below), whose sum is σ = 968502782. Its totient is φ = 447001272.

The previous prime is 670501907. The next prime is 670501999. The reversal of 670501917 is 719105076.

670501917 is a `hidden beast` number, since 67 + 0 + 501 + 91 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 441252036 + 229249881 = 21006^2 + 15141^2 .

It is not a de Polignac number, because 670501917 - 2¹⁴ = 670485533 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 (670501907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37250098 + ... + 37250115.

Almost surely, 2^670501917 is an apocalyptic number.

It is an amenable number.

670501917 is a deficient number, since it is larger than the sum of its proper divisors (298000865).

670501917 is a wasteful number, since it uses less digits than its factorization.

670501917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74500219 (or 74500216 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 670501917 is about 25894.0517686978. The cubic root of 670501917 is about 875.2524624429.

The spelling of 670501917 in words is "six hundred seventy million, five hundred one thousand, nine hundred seventeen".