670146723554 has 72 divisors (see below), whose sum is σ = 1286912200140. Its totient is φ = 260769653760.

The previous prime is 670146723497. The next prime is 670146723577. The reversal of 670146723554 is 455327641076.

It can be written as a sum of positive squares in 2 ways, for example, as 656788680625 + 13358042929 = 810425^2 + 115577^2 .

It is a super-2 number, since 2×670146723554² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9558194 + ... + 9628050.

Almost surely, 2^670146723554 is an apocalyptic number.

670146723554 is a deficient number, since it is larger than the sum of its proper divisors (616765476586).

670146723554 is a wasteful number, since it uses less digits than its factorization.

670146723554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70704 (or 70686 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 670146723554 in words is "six hundred seventy billion, one hundred forty-six million, seven hundred twenty-three thousand, five hundred fifty-four".