73569397 has 4 divisors (see below), whose sum is σ = 80257536. Its totient is φ = 66881260.

The previous prime is 73569389. The next prime is 73569407. The reversal of 73569397 is 79396537.

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 73569397 - 2³ = 73569389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73569397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73569337) 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, 3344053 + ... + 3344074.

It is an arithmetic number, because the mean of its divisors is an integer number (20064384).

Almost surely, 2^73569397 is an apocalyptic number.

It is an amenable number.

73569397 is a deficient number, since it is larger than the sum of its proper divisors (6688139).

73569397 is a wasteful number, since it uses less digits than its factorization.

73569397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688138.

The product of its digits is 1071630, while the sum is 49.

The square root of 73569397 is about 8577.2604600770. The cubic root of 73569397 is about 419.0177290797.

The spelling of 73569397 in words is "seventy-three million, five hundred sixty-nine thousand, three hundred ninety-seven".