64530245 has 16 divisors (see below), whose sum is σ = 83713392. Its totient is φ = 47470080.

The previous prime is 64530217. The next prime is 64530287. The reversal of 64530245 is 54203546.

It can be written as a sum of positive squares in 8 ways, for example, as 1156 + 64529089 = 34^2 + 8033^2 .

It is not a de Polignac number, because 64530245 - 2⁸ = 64529989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16499 + ... + 20031.

It is an arithmetic number, because the mean of its divisors is an integer number (5232087).

Almost surely, 2^64530245 is an apocalyptic number.

64530245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64530245 is a deficient number, since it is larger than the sum of its proper divisors (19183147).

64530245 is a wasteful number, since it uses less digits than its factorization.

64530245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 64530245 is about 8033.0719528708. The cubic root of 64530245 is about 401.1016402698.

The spelling of 64530245 in words is "sixty-four million, five hundred thirty thousand, two hundred forty-five".