64526040 has 96 divisors (see below), whose sum is σ = 218855520. Its totient is φ = 16456704.

The previous prime is 64526027. The next prime is 64526047. The reversal of 64526040 is 4062546.

It is a happy number.

64526040 is a `hidden beast` number, since 6 + 4 + 52 + 604 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 64525995 and 64526013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64526047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4384 + ... + 12176.

It is an arithmetic number, because the mean of its divisors is an integer number (2279745).

Almost surely, 2^64526040 is an apocalyptic number.

64526040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64526040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109427760).

64526040 is an abundant number, since it is smaller than the sum of its proper divisors (154329480).

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

64526040 is a wasteful number, since it uses less digits than its factorization.

64526040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7833 (or 7826 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 64526040 is about 8032.8102180993. The cubic root of 64526040 is about 401.0929277194.

Adding to 64526040 its reverse (4062546), we get a palindrome (68588586).

The spelling of 64526040 in words is "sixty-four million, five hundred twenty-six thousand, forty".