72493697 has 8 divisors (see below), whose sum is σ = 73246272. Its totient is φ = 71744400.

The previous prime is 72493691. The next prime is 72493709. The reversal of 72493697 is 79639427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72493697 - 2⁸ = 72493441 is a prime.

It is a super-2 number, since 2×72493697² = 10510672209455618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72493691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82223 + ... + 83099.

It is an arithmetic number, because the mean of its divisors is an integer number (9155784).

Almost surely, 2^72493697 is an apocalyptic number.

It is an amenable number.

72493697 is a deficient number, since it is larger than the sum of its proper divisors (752575).

72493697 is a wasteful number, since it uses less digits than its factorization.

72493697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639.

The product of its digits is 571536, while the sum is 47.

The square root of 72493697 is about 8514.3230500140. The cubic root of 72493697 is about 416.9654616982.

The spelling of 72493697 in words is "seventy-two million, four hundred ninety-three thousand, six hundred ninety-seven".