672745155 has 8 divisors (see below), whose sum is σ = 1076392272. Its totient is φ = 358797408.

The previous prime is 672745153. The next prime is 672745189. The reversal of 672745155 is 551547276.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 672745155 - 2¹ = 672745153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672745153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22424824 + ... + 22424853.

It is an arithmetic number, because the mean of its divisors is an integer number (134549034).

Almost surely, 2^672745155 is an apocalyptic number.

672745155 is a deficient number, since it is larger than the sum of its proper divisors (403647117).

672745155 is a wasteful number, since it uses less digits than its factorization.

672745155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44849685.

The product of its digits is 294000, while the sum is 42.

The square root of 672745155 is about 25937.3313006562. The cubic root of 672745155 is about 876.2274604280.

The spelling of 672745155 in words is "six hundred seventy-two million, seven hundred forty-five thousand, one hundred fifty-five".