73668715 has 4 divisors (see below), whose sum is σ = 88402464. Its totient is φ = 58934968.

The previous prime is 73668713. The next prime is 73668733. The reversal of 73668715 is 51786637.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51786637 = 7 ⋅7398091.

It is a cyclic number.

It is not a de Polignac number, because 73668715 - 2¹ = 73668713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73668713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7366867 + ... + 7366876.

It is an arithmetic number, because the mean of its divisors is an integer number (22100616).

Almost surely, 2^73668715 is an apocalyptic number.

73668715 is a deficient number, since it is larger than the sum of its proper divisors (14733749).

73668715 is a wasteful number, since it uses less digits than its factorization.

73668715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14733748.

The product of its digits is 211680, while the sum is 43.

The square root of 73668715 is about 8583.0481182386. The cubic root of 73668715 is about 419.2062009692.

The spelling of 73668715 in words is "seventy-three million, six hundred sixty-eight thousand, seven hundred fifteen".