672236397 has 48 divisors (see below), whose sum is σ = 1171730560. Its totient is φ = 362797056.

The previous prime is 672236377. The next prime is 672236407. The reversal of 672236397 is 793632276.

672236397 is a `hidden beast` number, since 6 + 7 + 2 + 2 + 3 + 639 + 7 = 666.

It is not a de Polignac number, because 672236397 - 2¹⁵ = 672203629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672236317) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 517653 + ... + 518949.

Almost surely, 2^672236397 is an apocalyptic number.

It is an amenable number.

672236397 is a deficient number, since it is larger than the sum of its proper divisors (499494163).

672236397 is a wasteful number, since it uses less digits than its factorization.

672236397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762 (or 1759 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The square root of 672236397 is about 25927.5219988336. The cubic root of 672236397 is about 876.0065247841.

The spelling of 672236397 in words is "six hundred seventy-two million, two hundred thirty-six thousand, three hundred ninety-seven".