72497933 has 4 divisors (see below), whose sum is σ = 74836608. Its totient is φ = 70159260.

The previous prime is 72497917. The next prime is 72497959. The reversal of 72497933 is 33979427.

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: 33979427 = 353 ⋅96259.

It is a cyclic number.

It is not a de Polignac number, because 72497933 - 2⁴ = 72497917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72497903) 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, 1169291 + ... + 1169352.

It is an arithmetic number, because the mean of its divisors is an integer number (18709152).

Almost surely, 2^72497933 is an apocalyptic number.

It is an amenable number.

72497933 is a deficient number, since it is larger than the sum of its proper divisors (2338675).

72497933 is a wasteful number, since it uses less digits than its factorization.

72497933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338674.

The product of its digits is 285768, while the sum is 44.

The square root of 72497933 is about 8514.5718036787. The cubic root of 72497933 is about 416.9735830079.

The spelling of 72497933 in words is "seventy-two million, four hundred ninety-seven thousand, nine hundred thirty-three".