672748137 has 12 divisors (see below), whose sum is σ = 1013997504. Its totient is φ = 428998680.

The previous prime is 672748127. The next prime is 672748147. The reversal of 672748137 is 731847276.

It is an interprime number because it is at equal distance from previous prime (672748127) and next prime (672748147).

It is not a de Polignac number, because 672748137 - 2¹⁴ = 672731753 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 672748092 and 672748101.

It is not an unprimeable number, because it can be changed into a prime (672748127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1624789 + ... + 1625202.

It is an arithmetic number, because the mean of its divisors is an integer number (84499792).

Almost surely, 2^672748137 is an apocalyptic number.

It is an amenable number.

672748137 is a deficient number, since it is larger than the sum of its proper divisors (341249367).

672748137 is a wasteful number, since it uses less digits than its factorization.

672748137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250020 (or 3250017 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 672748137 is about 25937.3887853037. The cubic root of 672748137 is about 876.2287550769.

The spelling of 672748137 in words is "six hundred seventy-two million, seven hundred forty-eight thousand, one hundred thirty-seven".