64406452 has 24 divisors (see below), whose sum is σ = 124346880. Its totient is φ = 28944960.

The previous prime is 64406413. The next prime is 64406453. The reversal of 64406452 is 25460446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64406453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4308 + ... + 12139.

It is an arithmetic number, because the mean of its divisors is an integer number (5181120).

Almost surely, 2^64406452 is an apocalyptic number.

It is an amenable number.

64406452 is a deficient number, since it is larger than the sum of its proper divisors (59940428).

64406452 is a wasteful number, since it uses less digits than its factorization.

64406452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16551 (or 16549 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 64406452 is about 8025.3630447476. The cubic root of 64406452 is about 400.8449887282.

Adding to 64406452 its reverse (25460446), we get a palindrome (89866898).

The spelling of 64406452 in words is "sixty-four million, four hundred six thousand, four hundred fifty-two".