73507223 has 4 divisors (see below), whose sum is σ = 74542608. Its totient is φ = 72471840.

The previous prime is 73507211. The next prime is 73507249. The reversal of 73507223 is 32270537.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32270537 = 13 ⋅2482349.

It is a cyclic number.

It is not a de Polignac number, because 73507223 - 2¹⁴ = 73490839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73507283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517586 + ... + 517727.

It is an arithmetic number, because the mean of its divisors is an integer number (18635652).

Almost surely, 2^73507223 is an apocalyptic number.

73507223 is a deficient number, since it is larger than the sum of its proper divisors (1035385).

73507223 is a wasteful number, since it uses less digits than its factorization.

73507223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035384.

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 73507223 is about 8573.6353433068. The cubic root of 73507223 is about 418.8996575640.

The spelling of 73507223 in words is "seventy-three million, five hundred seven thousand, two hundred twenty-three".