72751673 has 4 divisors (see below), whose sum is σ = 72961680. Its totient is φ = 72541668.

The previous prime is 72751667. The next prime is 72751729. The reversal of 72751673 is 37615727.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37615727 = 97 ⋅387791.

It is a cyclic number.

It is not a de Polignac number, because 72751673 - 2⁸ = 72751417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72751603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104483 + ... + 105176.

It is an arithmetic number, because the mean of its divisors is an integer number (18240420).

Almost surely, 2^72751673 is an apocalyptic number.

It is an amenable number.

72751673 is a deficient number, since it is larger than the sum of its proper divisors (210007).

72751673 is a wasteful number, since it uses less digits than its factorization.

72751673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210006.

The product of its digits is 61740, while the sum is 38.

The square root of 72751673 is about 8529.4591270490. The cubic root of 72751673 is about 417.4594804521.

The spelling of 72751673 in words is "seventy-two million, seven hundred fifty-one thousand, six hundred seventy-three".