73930561 has 4 divisors (see below), whose sum is σ = 74317824. Its totient is φ = 73543300.

The previous prime is 73930559. The next prime is 73930573. The reversal of 73930561 is 16503937.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16503937 = 277 ⋅59581.

It is a cyclic number.

It is not a de Polignac number, because 73930561 - 2¹ = 73930559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73930511) 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, 193345 + ... + 193726.

It is an arithmetic number, because the mean of its divisors is an integer number (18579456).

Almost surely, 2^73930561 is an apocalyptic number.

It is an amenable number.

73930561 is a deficient number, since it is larger than the sum of its proper divisors (387263).

73930561 is a wasteful number, since it uses less digits than its factorization.

73930561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387262.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 73930561 is about 8598.2882598806. The cubic root of 73930561 is about 419.7022852370.

The spelling of 73930561 in words is "seventy-three million, nine hundred thirty thousand, five hundred sixty-one".