73022621 has 4 divisors (see below), whose sum is σ = 83454432. Its totient is φ = 62590812.

The previous prime is 73022617. The next prime is 73022629. The reversal of 73022621 is 12622037.

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: 12622037 = 251 ⋅50287.

It is a cyclic number.

It is not a de Polignac number, because 73022621 - 2² = 73022617 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 (73022629) 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, 5215895 + ... + 5215908.

It is an arithmetic number, because the mean of its divisors is an integer number (20863608).

Almost surely, 2^73022621 is an apocalyptic number.

It is an amenable number.

73022621 is a deficient number, since it is larger than the sum of its proper divisors (10431811).

73022621 is a wasteful number, since it uses less digits than its factorization.

73022621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10431810.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 73022621 is about 8545.3274366756. The cubic root of 73022621 is about 417.9770845095.

Adding to 73022621 its reverse (12622037), we get a palindrome (85644658).

The spelling of 73022621 in words is "seventy-three million, twenty-two thousand, six hundred twenty-one".