64754240 has 28 divisors (see below), whose sum is σ = 154196796. Its totient is φ = 25901568.

The previous prime is 64754237. The next prime is 64754281. The reversal of 64754240 is 4245746.

It can be written as a sum of positive squares in 2 ways, for example, as 18731584 + 46022656 = 4328^2 + 6784^2 .

It is a super-2 number, since 2×64754240² = 8386223195955200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 64754197 and 64754206.

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, 100859 + ... + 101498.

Almost surely, 2^64754240 is an apocalyptic number.

It is an amenable number.

64754240 is an abundant number, since it is smaller than the sum of its proper divisors (89442556).

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

64754240 is a wasteful number, since it uses less digits than its factorization.

64754240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202374 (or 202364 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 64754240 is about 8047.0019261834. The cubic root of 64754240 is about 401.5652007116.

Adding to 64754240 its reverse (4245746), we get a palindrome (68999986).

The spelling of 64754240 in words is "sixty-four million, seven hundred fifty-four thousand, two hundred forty".