64147652 has 24 divisors (see below), whose sum is σ = 117347160. Its totient is φ = 30643200.

The previous prime is 64147637. The next prime is 64147663. The reversal of 64147652 is 25674146.

It can be written as a sum of positive squares in 4 ways, for example, as 18800896 + 45346756 = 4336^2 + 6734^2 .

It is a super-2 number, since 2×64147652² = 8229842514226208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8402 + ... + 14102.

It is an arithmetic number, because the mean of its divisors is an integer number (4889465).

Almost surely, 2^64147652 is an apocalyptic number.

It is an amenable number.

64147652 is a deficient number, since it is larger than the sum of its proper divisors (53199508).

64147652 is a wasteful number, since it uses less digits than its factorization.

64147652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5831 (or 5829 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 64147652 is about 8009.2229335935. Note that the first 3 decimals coincide. The cubic root of 64147652 is about 400.3073720788.

The spelling of 64147652 in words is "sixty-four million, one hundred forty-seven thousand, six hundred fifty-two".