64027947 has 16 divisors (see below), whose sum is σ = 87442560. Its totient is φ = 41661312.

The previous prime is 64027919. The next prime is 64027961. The reversal of 64027947 is 74972046.

It is not a de Polignac number, because 64027947 - 2¹⁵ = 63995179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64027907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21304 + ... + 24122.

It is an arithmetic number, because the mean of its divisors is an integer number (5465160).

Almost surely, 2^64027947 is an apocalyptic number.

64027947 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

64027947 is a deficient number, since it is larger than the sum of its proper divisors (23414613).

64027947 is a wasteful number, since it uses less digits than its factorization.

64027947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 64027947 is about 8001.7464968593. The cubic root of 64027947 is about 400.0582144440.

The spelling of 64027947 in words is "sixty-four million, twenty-seven thousand, nine hundred forty-seven".