672733251 has 6 divisors (see below), whose sum is σ = 971725820. Its totient is φ = 448488828.

The previous prime is 672733249. The next prime is 672733253. The reversal of 672733251 is 152337276.

672733251 is a `hidden beast` number, since 67 + 273 + 325 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (672733249) and next prime (672733253).

It is not a de Polignac number, because 672733251 - 2¹ = 672733249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672733253) 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, 37374061 + ... + 37374078.

Almost surely, 2^672733251 is an apocalyptic number.

672733251 is a deficient number, since it is larger than the sum of its proper divisors (298992569).

672733251 is a wasteful number, since it uses less digits than its factorization.

672733251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74748145 (or 74748142 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 672733251 is about 25937.1018234497. The cubic root of 672733251 is about 876.2222922138. Note that the first 4 decimals are identical.

The spelling of 672733251 in words is "six hundred seventy-two million, seven hundred thirty-three thousand, two hundred fifty-one".