64022661 has 12 divisors (see below), whose sum is σ = 92676480. Its totient is φ = 42589800.

The previous prime is 64022659. The next prime is 64022669. The reversal of 64022661 is 16622046.

It is a happy number.

It is not a de Polignac number, because 64022661 - 2¹ = 64022659 is a prime.

It is a super-2 number, since 2×64022661² = 8197802243041842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64022669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3115 + ... + 11736.

It is an arithmetic number, because the mean of its divisors is an integer number (7723040).

Almost surely, 2^64022661 is an apocalyptic number.

It is an amenable number.

64022661 is a deficient number, since it is larger than the sum of its proper divisors (28653819).

64022661 is a wasteful number, since it uses less digits than its factorization.

64022661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15336 (or 15333 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 64022661 is about 8001.4161871509. The cubic root of 64022661 is about 400.0472048457.

The spelling of 64022661 in words is "sixty-four million, twenty-two thousand, six hundred sixty-one".