73769621 has 4 divisors (see below), whose sum is σ = 73794144. Its totient is φ = 73745100.

The previous prime is 73769617. The next prime is 73769623. The reversal of 73769621 is 12696737.

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: 12696737 = 149 ⋅85213.

It is a cyclic number.

It is not a de Polignac number, because 73769621 - 2² = 73769617 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 (73769623) 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, 6995 + ... + 14016.

It is an arithmetic number, because the mean of its divisors is an integer number (18448536).

Almost surely, 2^73769621 is an apocalyptic number.

It is an amenable number.

73769621 is a deficient number, since it is larger than the sum of its proper divisors (24523).

73769621 is a wasteful number, since it uses less digits than its factorization.

73769621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24522.

The product of its digits is 95256, while the sum is 41.

The square root of 73769621 is about 8588.9243214736. The cubic root of 73769621 is about 419.3975129450.

The spelling of 73769621 in words is "seventy-three million, seven hundred sixty-nine thousand, six hundred twenty-one".