672547156 has 6 divisors (see below), whose sum is σ = 1176957530. Its totient is φ = 336273576.

The previous prime is 672547151. The next prime is 672547223. The reversal of 672547156 is 651745276.

It can be written as a sum of positive squares in only one way, i.e., 518290756 + 154256400 = 22766^2 + 12420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672547151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84068391 + ... + 84068398.

Almost surely, 2^672547156 is an apocalyptic number.

It is an amenable number.

672547156 is a deficient number, since it is larger than the sum of its proper divisors (504410374).

672547156 is a wasteful number, since it uses less digits than its factorization.

672547156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168136793 (or 168136791 counting only the distinct ones).

The product of its digits is 352800, while the sum is 43.

The square root of 672547156 is about 25933.5141467561. The cubic root of 672547156 is about 876.1414896940.

The spelling of 672547156 in words is "six hundred seventy-two million, five hundred forty-seven thousand, one hundred fifty-six".