64396369 has 4 divisors (see below), whose sum is σ = 64782144. Its totient is φ = 64010596.

The previous prime is 64396351. The next prime is 64396373. The reversal of 64396369 is 96369346.

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 64396369 - 2¹¹ = 64394321 is a prime.

It is a super-2 number, since 2×64396369² = 8293784680768322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64396469) 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, 192637 + ... + 192970.

It is an arithmetic number, because the mean of its divisors is an integer number (16195536).

Almost surely, 2^64396369 is an apocalyptic number.

It is an amenable number.

64396369 is a deficient number, since it is larger than the sum of its proper divisors (385775).

64396369 is a wasteful number, since it uses less digits than its factorization.

64396369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385774.

The product of its digits is 629856, while the sum is 46.

The square root of 64396369 is about 8024.7348242792. The cubic root of 64396369 is about 400.8240698563.

The spelling of 64396369 in words is "sixty-four million, three hundred ninety-six thousand, three hundred sixty-nine".