73972615 has 8 divisors (see below), whose sum is σ = 88850448. Its totient is φ = 59122560.

The previous prime is 73972609. The next prime is 73972621. The reversal of 73972615 is 51627937.

It is an interprime number because it is at equal distance from previous prime (73972609) and next prime (73972621).

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

It is not a de Polignac number, because 73972615 - 2¹⁵ = 73939847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546 + ... + 12175.

It is an arithmetic number, because the mean of its divisors is an integer number (11106306).

Almost surely, 2^73972615 is an apocalyptic number.

73972615 is a deficient number, since it is larger than the sum of its proper divisors (14877833).

73972615 is a wasteful number, since it uses less digits than its factorization.

73972615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13889.

The product of its digits is 79380, while the sum is 40.

The square root of 73972615 is about 8600.7333989608. The cubic root of 73972615 is about 419.7818500524.

The spelling of 73972615 in words is "seventy-three million, nine hundred seventy-two thousand, six hundred fifteen".