73697421 has 12 divisors (see below), whose sum is σ = 114306432. Its totient is φ = 42112728.

The previous prime is 73697419. The next prime is 73697453. The reversal of 73697421 is 12479637.

It is not a de Polignac number, because 73697421 - 2¹ = 73697419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73697421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73697471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250525 + ... + 250818.

It is an arithmetic number, because the mean of its divisors is an integer number (9525536).

Almost surely, 2^73697421 is an apocalyptic number.

It is an amenable number.

73697421 is a deficient number, since it is larger than the sum of its proper divisors (40609011).

73697421 is a wasteful number, since it uses less digits than its factorization.

73697421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501360 (or 501353 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 73697421 is about 8584.7202051086. The cubic root of 73697421 is about 419.2606436658.

The spelling of 73697421 in words is "seventy-three million, six hundred ninety-seven thousand, four hundred twenty-one".