64454040 has 96 divisors (see below), whose sum is σ = 239410080. Its totient is φ = 14731776.

The previous prime is 64454029. The next prime is 64454041. The reversal of 64454040 is 4045446.

It is a junction number, because it is equal to n+sod(n) for n = 64453995 and 64454013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64454041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10269 + ... + 15308.

It is an arithmetic number, because the mean of its divisors is an integer number (2493855).

Almost surely, 2^64454040 is an apocalyptic number.

64454040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64454040 is an abundant number, since it is smaller than the sum of its proper divisors (174956040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64454040 is a wasteful number, since it uses less digits than its factorization.

64454040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25601 (or 25594 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 64454040 is about 8028.3273475862. The cubic root of 64454040 is about 400.9436885457.

Adding to 64454040 its reverse (4045446), we get a palindrome (68499486).

The spelling of 64454040 in words is "sixty-four million, four hundred fifty-four thousand, forty".