172700647 has 6 divisors (see below), whose sum is σ = 200896728. Its totient is φ = 148029084.

The previous prime is 172700639. The next prime is 172700653. The reversal of 172700647 is 746007271.

It is not a de Polignac number, because 172700647 - 2³ = 172700639 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 (172700617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1762203 + ... + 1762300.

It is an arithmetic number, because the mean of its divisors is an integer number (33482788).

Almost surely, 2^172700647 is an apocalyptic number.

172700647 is a deficient number, since it is larger than the sum of its proper divisors (28196081).

172700647 is an equidigital number, since it uses as much as digits as its factorization.

172700647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524517 (or 3524510 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 172700647 is about 13141.5618173792. The cubic root of 172700647 is about 556.8838905461.

The spelling of 172700647 in words is "one hundred seventy-two million, seven hundred thousand, six hundred forty-seven".