73474321 has 4 divisors (see below), whose sum is σ = 73496944. Its totient is φ = 73451700.

The previous prime is 73474307. The next prime is 73474327. The reversal of 73474321 is 12347437.

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.

It is a cyclic number.

It is not a de Polignac number, because 73474321 - 2⁹ = 73473809 is a prime.

It is a super-2 number, since 2×73474321² = 10796951692822082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73474327) 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, 5415 + ... + 13276.

It is an arithmetic number, because the mean of its divisors is an integer number (18374236).

Almost surely, 2^73474321 is an apocalyptic number.

It is an amenable number.

73474321 is a deficient number, since it is larger than the sum of its proper divisors (22623).

73474321 is a wasteful number, since it uses less digits than its factorization.

73474321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22622.

The product of its digits is 14112, while the sum is 31.

The square root of 73474321 is about 8571.7163392170. The cubic root of 73474321 is about 418.8371480905.

The spelling of 73474321 in words is "seventy-three million, four hundred seventy-four thousand, three hundred twenty-one".