64530149 has 2 divisors, whose sum is σ = 64530150. Its totient is φ = 64530148.

The previous prime is 64530091. The next prime is 64530161. The reversal of 64530149 is 94103546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61701025 + 2829124 = 7855^2 + 1682^2 .

It is a cyclic number.

It is not a de Polignac number, because 64530149 - 2¹² = 64526053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64530199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32265074 + 32265075.

It is an arithmetic number, because the mean of its divisors is an integer number (32265075).

Almost surely, 2^64530149 is an apocalyptic number.

It is an amenable number.

64530149 is a deficient number, since it is larger than the sum of its proper divisors (1).

64530149 is an equidigital number, since it uses as much as digits as its factorization.

64530149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 64530149 is about 8033.0659775705. The cubic root of 64530149 is about 401.1014413668.

The spelling of 64530149 in words is "sixty-four million, five hundred thirty thousand, one hundred forty-nine".