64606433 has 4 divisors (see below), whose sum is σ = 64625940. Its totient is φ = 64586928.

The previous prime is 64606429. The next prime is 64606439. The reversal of 64606433 is 33460646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33460646 = 2 ⋅16730323.

It can be written as a sum of positive squares in 2 ways, for example, as 39526369 + 25080064 = 6287^2 + 5008^2 .

It is a cyclic number.

It is not a de Polignac number, because 64606433 - 2² = 64606429 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 64606433.

It is not an unprimeable number, because it can be changed into a prime (64606439) 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, 3410 + ... + 11867.

It is an arithmetic number, because the mean of its divisors is an integer number (16156485).

Almost surely, 2^64606433 is an apocalyptic number.

It is an amenable number.

64606433 is a deficient number, since it is larger than the sum of its proper divisors (19507).

64606433 is a wasteful number, since it uses less digits than its factorization.

64606433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19506.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 64606433 is about 8037.8126999825. The cubic root of 64606433 is about 401.2594324960.

It can be divided in two parts, 6460643 and 3, that added together give a palindrome (6460646).

The spelling of 64606433 in words is "sixty-four million, six hundred six thousand, four hundred thirty-three".