66152403 has 16 divisors (see below), whose sum is σ = 98508960. Its totient is φ = 43874208.

The previous prime is 66152399. The next prime is 66152413. The reversal of 66152403 is 30425166.

66152403 is a `hidden beast` number, since 6 + 615 + 2 + 40 + 3 = 666.

It is not a de Polignac number, because 66152403 - 2² = 66152399 is a prime.

It is a super-2 number, since 2×66152403² = 8752280845348818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (66152413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900 + ... + 11537.

It is an arithmetic number, because the mean of its divisors is an integer number (6156810).

Almost surely, 2^66152403 is an apocalyptic number.

66152403 is a deficient number, since it is larger than the sum of its proper divisors (32356557).

66152403 is a wasteful number, since it uses less digits than its factorization.

66152403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12643 (or 12637 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 66152403 is about 8133.4127523445. The cubic root of 66152403 is about 404.4348220858.

Adding to 66152403 its reverse (30425166), we get a palindrome (96577569).

The spelling of 66152403 in words is "sixty-six million, one hundred fifty-two thousand, four hundred three".