672338536 has 8 divisors (see below), whose sum is σ = 1260634770. Its totient is φ = 336169264.

The previous prime is 672338531. The next prime is 672338543. The reversal of 672338536 is 635833276.

It can be written as a sum of positive squares in only one way, i.e., 438064900 + 234273636 = 20930^2 + 15306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 672338492 and 672338501.

It is not an unprimeable number, because it can be changed into a prime (672338531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42021151 + ... + 42021166.

Almost surely, 2^672338536 is an apocalyptic number.

It is an amenable number.

672338536 is a deficient number, since it is larger than the sum of its proper divisors (588296234).

672338536 is a wasteful number, since it uses less digits than its factorization.

672338536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84042323 (or 84042319 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The square root of 672338536 is about 25929.4916263316. The cubic root of 672338536 is about 876.0508890879.

The spelling of 672338536 in words is "six hundred seventy-two million, three hundred thirty-eight thousand, five hundred thirty-six".