73638505 has 8 divisors (see below), whose sum is σ = 88573824. Its totient is φ = 58772400.

The previous prime is 73638493. The next prime is 73638517. The reversal of 73638505 is 50583637.

It is an interprime number because it is at equal distance from previous prime (73638493) and next prime (73638517).

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

It is not a de Polignac number, because 73638505 - 2⁷ = 73638377 is a prime.

It is a Duffinian 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, 14931 + ... + 19240.

It is an arithmetic number, because the mean of its divisors is an integer number (11071728).

Almost surely, 2^73638505 is an apocalyptic number.

It is an amenable number.

73638505 is a deficient number, since it is larger than the sum of its proper divisors (14935319).

73638505 is a wasteful number, since it uses less digits than its factorization.

73638505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34607.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 73638505 is about 8581.2880734771. The cubic root of 73638505 is about 419.1488905680.

The spelling of 73638505 in words is "seventy-three million, six hundred thirty-eight thousand, five hundred five".