64016402 has 4 divisors (see below), whose sum is σ = 96024606. Its totient is φ = 32008200.

The previous prime is 64016371. The next prime is 64016413. The reversal of 64016402 is 20461046.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20461046 = 2 ⋅10230523.

It can be written as a sum of positive squares in only one way, i.e., 39325441 + 24690961 = 6271^2 + 4969^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16004099 + ... + 16004102.

Almost surely, 2^64016402 is an apocalyptic number.

64016402 is a deficient number, since it is larger than the sum of its proper divisors (32008204).

64016402 is a wasteful number, since it uses less digits than its factorization.

64016402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32008203.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 64016402 is about 8001.0250593283. The cubic root of 64016402 is about 400.0341679146.

Adding to 64016402 its reverse (20461046), we get a palindrome (84477448).

The spelling of 64016402 in words is "sixty-four million, sixteen thousand, four hundred two".