73641015 has 64 divisors (see below), whose sum is σ = 150912000. Its totient is φ = 33374592.

The previous prime is 73640999. The next prime is 73641023. The reversal of 73641015 is 51014637.

73641015 is a `hidden beast` number, since 7 + 3 + 641 + 0 + 15 = 666.

It is not a de Polignac number, because 73641015 - 2⁴ = 73640999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 73641015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 140544 + ... + 141066.

It is an arithmetic number, because the mean of its divisors is an integer number (2358000).

Almost surely, 2^73641015 is an apocalyptic number.

73641015 is an abundant number, since it is smaller than the sum of its proper divisors (77270985).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73641015 is a wasteful number, since it uses less digits than its factorization.

73641015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 73641015 is about 8581.4343206716. The cubic root of 73641015 is about 419.1536528037.

The spelling of 73641015 in words is "seventy-three million, six hundred forty-one thousand, fifteen".