64166145 has 8 divisors (see below), whose sum is σ = 102665856. Its totient is φ = 34221936.

The previous prime is 64166119. The next prime is 64166147. The reversal of 64166145 is 54166146.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64166145 - 2⁷ = 64166017 is a prime.

It is a super-2 number, since 2×64166145² = 8234588328322050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64166147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2138857 + ... + 2138886.

It is an arithmetic number, because the mean of its divisors is an integer number (12833232).

Almost surely, 2^64166145 is an apocalyptic number.

It is an amenable number.

64166145 is a deficient number, since it is larger than the sum of its proper divisors (38499711).

64166145 is a wasteful number, since it uses less digits than its factorization.

64166145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277751.

The product of its digits is 17280, while the sum is 33.

The square root of 64166145 is about 8010.3773319364. The cubic root of 64166145 is about 400.3458363236.

Subtracting from 64166145 its reverse (54166146), we obtain a palindrome (9999999).

It can be divided in two parts, 6416 and 6145, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 64166145 in words is "sixty-four million, one hundred sixty-six thousand, one hundred forty-five".