73640319 has 16 divisors (see below), whose sum is σ = 104198400. Its totient is φ = 46160576.

The previous prime is 73640317. The next prime is 73640321. The reversal of 73640319 is 91304637.

It is an interprime number because it is at equal distance from previous prime (73640317) and next prime (73640321).

It is a cyclic number.

It is not a de Polignac number, because 73640319 - 2¹ = 73640317 is a prime.

It is a super-2 number, since 2×73640319² = 10845793164843522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73640319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73640317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4974 + ... + 13115.

It is an arithmetic number, because the mean of its divisors is an integer number (6512400).

Almost surely, 2^73640319 is an apocalyptic number.

73640319 is a deficient number, since it is larger than the sum of its proper divisors (30558081).

73640319 is a wasteful number, since it uses less digits than its factorization.

73640319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18174.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 73640319 is about 8581.3937679144. The cubic root of 73640319 is about 419.1523322902.

The spelling of 73640319 in words is "seventy-three million, six hundred forty thousand, three hundred nineteen".