73640365 has 16 divisors (see below), whose sum is σ = 93120768. Its totient is φ = 55794816.

The previous prime is 73640327. The next prime is 73640383. The reversal of 73640365 is 56304637.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73640365 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73640365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8737 + ... + 14953.

It is an arithmetic number, because the mean of its divisors is an integer number (5820048).

Almost surely, 2^73640365 is an apocalyptic number.

It is an amenable number.

73640365 is a deficient number, since it is larger than the sum of its proper divisors (19480403).

73640365 is a wasteful number, since it uses less digits than its factorization.

73640365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6348.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 73640365 is about 8581.3964481313. The cubic root of 73640365 is about 419.1524195658.

The spelling of 73640365 in words is "seventy-three million, six hundred forty thousand, three hundred sixty-five".