64530015 has 32 divisors (see below), whose sum is σ = 113757696. Its totient is φ = 30975360.

The previous prime is 64529999. The next prime is 64530031. The reversal of 64530015 is 51003546.

It is an interprime number because it is at equal distance from previous prime (64529999) and next prime (64530031).

It is not a de Polignac number, because 64530015 - 2⁴ = 64529999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15097 + ... + 18893.

It is an arithmetic number, because the mean of its divisors is an integer number (3554928).

Almost surely, 2^64530015 is an apocalyptic number.

64530015 is a deficient number, since it is larger than the sum of its proper divisors (49227681).

64530015 is a wasteful number, since it uses less digits than its factorization.

64530015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 64530015 is about 8033.0576370396. The cubic root of 64530015 is about 401.1011637310.

The spelling of 64530015 in words is "sixty-four million, five hundred thirty thousand, fifteen".