64140652 has 12 divisors (see below), whose sum is σ = 117126576. Its totient is φ = 30675920.

The previous prime is 64140631. The next prime is 64140667. The reversal of 64140652 is 25604146.

It is a super-2 number, since 2×64140652² = 8228046477970208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64140652.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348499 + ... + 348682.

It is an arithmetic number, because the mean of its divisors is an integer number (9760548).

Almost surely, 2^64140652 is an apocalyptic number.

It is an amenable number.

64140652 is a deficient number, since it is larger than the sum of its proper divisors (52985924).

64140652 is a wasteful number, since it uses less digits than its factorization.

64140652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697208 (or 697206 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 64140652 is about 8008.7859254696. The cubic root of 64140652 is about 400.2928106026.

Adding to 64140652 its reverse (25604146), we get a palindrome (89744798).

The spelling of 64140652 in words is "sixty-four million, one hundred forty thousand, six hundred fifty-two".