64506145 has 16 divisors (see below), whose sum is σ = 88117632. Its totient is φ = 44872960.

The previous prime is 64506139. The next prime is 64506151. The reversal of 64506145 is 54160546.

It is an interprime number because it is at equal distance from previous prime (64506139) and next prime (64506151).

It is not a de Polignac number, because 64506145 - 2²¹ = 62408993 is a prime.

It is a super-2 number, since 2×64506145² = 8322085485522050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24232 + ... + 26761.

It is an arithmetic number, because the mean of its divisors is an integer number (5507352).

Almost surely, 2^64506145 is an apocalyptic number.

It is an amenable number.

64506145 is a deficient number, since it is larger than the sum of its proper divisors (23611487).

64506145 is a wasteful number, since it uses less digits than its factorization.

64506145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51032.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 64506145 is about 8031.5717639824. The cubic root of 64506145 is about 401.0517011383.

The spelling of 64506145 in words is "sixty-four million, five hundred six thousand, one hundred forty-five".