66038902 has 16 divisors (see below), whose sum is σ = 100358352. Its totient is φ = 32588640.

The previous prime is 66038893. The next prime is 66038909. The reversal of 66038902 is 20983066.

It is a happy number.

It is a super-2 number, since 2×66038902² = 8722273154731208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66038909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89728 + ... + 90460.

It is an arithmetic number, because the mean of its divisors is an integer number (6272397).

Almost surely, 2^66038902 is an apocalyptic number.

66038902 is a deficient number, since it is larger than the sum of its proper divisors (34319450).

66038902 is a wasteful number, since it uses less digits than its factorization.

66038902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 66038902 is about 8126.4323045233. The cubic root of 66038902 is about 404.2033866285.

The spelling of 66038902 in words is "sixty-six million, thirty-eight thousand, nine hundred two".