64406451 has 8 divisors (see below), whose sum is σ = 86156224. Its totient is φ = 42797160.

The previous prime is 64406413. The next prime is 64406453. The reversal of 64406451 is 15460446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-64406451 is a prime.

It is a Duffinian 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, 34045 + ... + 35886.

It is an arithmetic number, because the mean of its divisors is an integer number (10769528).

Almost surely, 2^64406451 is an apocalyptic number.

64406451 is a deficient number, since it is larger than the sum of its proper divisors (21749773).

64406451 is a wasteful number, since it uses less digits than its factorization.

64406451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70241.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 64406451 is about 8025.3629824451. The cubic root of 64406451 is about 400.8449866536.

Adding to 64406451 its reverse (15460446), we get a palindrome (79866897).

The spelling of 64406451 in words is "sixty-four million, four hundred six thousand, four hundred fifty-one".