64020202 has 4 divisors (see below), whose sum is σ = 96030306. Its totient is φ = 32010100.

The previous prime is 64020199. The next prime is 64020217. The reversal of 64020202 is 20202046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20202046 = 2 ⋅10101023.

It can be written as a sum of positive squares in only one way, i.e., 57775201 + 6245001 = 7601^2 + 2499^2 .

64020202 is a modest number, since divided by 20202 gives 64 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16005049 + ... + 16005052.

Almost surely, 2^64020202 is an apocalyptic number.

64020202 is a deficient number, since it is larger than the sum of its proper divisors (32010104).

64020202 is a wasteful number, since it uses less digits than its factorization.

64020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32010103.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 64020202 is about 8001.2625253769. The cubic root of 64020202 is about 400.0420830724.

Adding to 64020202 its reverse (20202046), we get a palindrome (84222248).

The spelling of 64020202 in words is "sixty-four million, twenty thousand, two hundred two".