64066402 has 4 divisors (see below), whose sum is σ = 96099606. Its totient is φ = 32033200.

The previous prime is 64066397. The next prime is 64066403. The reversal of 64066402 is 20466046.

64066402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20466046 = 2 ⋅10233023.

It can be written as a sum of positive squares in only one way, i.e., 42915601 + 21150801 = 6551^2 + 4599^2 .

It is not an unprimeable number, because it can be changed into a prime (64066403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16016599 + ... + 16016602.

Almost surely, 2^64066402 is an apocalyptic number.

64066402 is a deficient number, since it is larger than the sum of its proper divisors (32033204).

64066402 is a wasteful number, since it uses less digits than its factorization.

64066402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32033203.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 64066402 is about 8004.1490490870. The cubic root of 64066402 is about 400.1382896844.

The spelling of 64066402 in words is "sixty-four million, sixty-six thousand, four hundred two".