64871522 has 4 divisors (see below), whose sum is σ = 97307286. Its totient is φ = 32435760.

The previous prime is 64871501. The next prime is 64871537. The reversal of 64871522 is 22517846.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63504961 + 1366561 = 7969^2 + 1169^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16217879 + ... + 16217882.

Almost surely, 2^64871522 is an apocalyptic number.

64871522 is a deficient number, since it is larger than the sum of its proper divisors (32435764).

64871522 is a wasteful number, since it uses less digits than its factorization.

64871522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32435763.

The product of its digits is 26880, while the sum is 35.

The square root of 64871522 is about 8054.2859397963. The cubic root of 64871522 is about 401.8074909720.

The spelling of 64871522 in words is "sixty-four million, eight hundred seventy-one thousand, five hundred twenty-two".