64526947 has 4 divisors (see below), whose sum is σ = 64543336. Its totient is φ = 64510560.

The previous prime is 64526941. The next prime is 64526953. The reversal of 64526947 is 74962546.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (64526941) and next prime (64526953).

It is a cyclic number.

It is not a de Polignac number, because 64526947 - 2¹¹ = 64524899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64526941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672 + ... + 11482.

It is an arithmetic number, because the mean of its divisors is an integer number (16135834).

Almost surely, 2^64526947 is an apocalyptic number.

64526947 is a deficient number, since it is larger than the sum of its proper divisors (16389).

64526947 is an equidigital number, since it uses as much as digits as its factorization.

64526947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16388.

The product of its digits is 362880, while the sum is 43.

The square root of 64526947 is about 8032.8666738593. The cubic root of 64526947 is about 401.0948070102.

The spelling of 64526947 in words is "sixty-four million, five hundred twenty-six thousand, nine hundred forty-seven".