670172222655 has 48 divisors (see below), whose sum is σ = 1316829652320. Its totient is φ = 312566148864.

The previous prime is 670172222639. The next prime is 670172222669. The reversal of 670172222655 is 556222271076.

It is not a de Polignac number, because 670172222655 - 2⁴ = 670172222639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 670172222655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30136084 + ... + 30158313.

It is an arithmetic number, because the mean of its divisors is an integer number (27433951090).

Almost surely, 2^670172222655 is an apocalyptic number.

670172222655 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

670172222655 is a deficient number, since it is larger than the sum of its proper divisors (646657429665).

670172222655 is a wasteful number, since it uses less digits than its factorization.

670172222655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60294440 (or 60294437 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 670172222655 in words is "six hundred seventy billion, one hundred seventy-two million, two hundred twenty-two thousand, six hundred fifty-five".