64545146 has 4 divisors (see below), whose sum is σ = 96817722. Its totient is φ = 32272572.

The previous prime is 64545059. The next prime is 64545157. The reversal of 64545146 is 64154546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64154546 = 2 ⋅32077273.

It can be written as a sum of positive squares in only one way, i.e., 41744521 + 22800625 = 6461^2 + 4775^2 .

It is a super-2 number, since 2×64545146² = 8332151744322632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16136285 + ... + 16136288.

Almost surely, 2^64545146 is an apocalyptic number.

64545146 is a deficient number, since it is larger than the sum of its proper divisors (32272576).

64545146 is a wasteful number, since it uses less digits than its factorization.

64545146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32272575.

The product of its digits is 57600, while the sum is 35.

The square root of 64545146 is about 8033.9993776450. Note that the first 3 decimals coincide. The cubic root of 64545146 is about 401.1325113523.

The spelling of 64545146 in words is "sixty-four million, five hundred forty-five thousand, one hundred forty-six".