64233646 has 4 divisors (see below), whose sum is σ = 96350472. Its totient is φ = 32116822.

The previous prime is 64233619. The next prime is 64233709. The reversal of 64233646 is 64633246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64633246 = 2 ⋅32316623.

It is a super-2 number, since 2×64233646² = 8251922556906632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16058410 + ... + 16058413.

It is an arithmetic number, because the mean of its divisors is an integer number (24087618).

Almost surely, 2^64233646 is an apocalyptic number.

64233646 is a deficient number, since it is larger than the sum of its proper divisors (32116826).

64233646 is a wasteful number, since it uses less digits than its factorization.

64233646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32116825.

The product of its digits is 62208, while the sum is 34.

The square root of 64233646 is about 8014.5895715252. The cubic root of 64233646 is about 400.4861713541.

The spelling of 64233646 in words is "sixty-four million, two hundred thirty-three thousand, six hundred forty-six".