64204402 has 4 divisors (see below), whose sum is σ = 96306606. Its totient is φ = 32102200.

The previous prime is 64204381. The next prime is 64204409. The reversal of 64204402 is 20440246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49999041 + 14205361 = 7071^2 + 3769^2 .

It is not an unprimeable number, because it can be changed into a prime (64204409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16051099 + ... + 16051102.

Almost surely, 2^64204402 is an apocalyptic number.

64204402 is a deficient number, since it is larger than the sum of its proper divisors (32102204).

64204402 is a wasteful number, since it uses less digits than its factorization.

64204402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32102203.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 64204402 is about 8012.7649410176. The cubic root of 64204402 is about 400.4253849587.

Adding to 64204402 its reverse (20440246), we get a palindrome (84644648).

The spelling of 64204402 in words is "sixty-four million, two hundred four thousand, four hundred two".