64342540 has 24 divisors (see below), whose sum is σ = 135303840. Its totient is φ = 25701888.

The previous prime is 64342529. The next prime is 64342541. The reversal of 64342540 is 4524346.

64342540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64342499 and 64342508.

It is not an unprimeable number, because it can be changed into a prime (64342541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16849 + ... + 20311.

It is an arithmetic number, because the mean of its divisors is an integer number (5637660).

Almost surely, 2^64342540 is an apocalyptic number.

It is an amenable number.

64342540 is an abundant number, since it is smaller than the sum of its proper divisors (70961300).

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

64342540 is a wasteful number, since it uses less digits than its factorization.

64342540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401 (or 4399 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 64342540 is about 8021.3801804926. The cubic root of 64342540 is about 400.7123556206.

Adding to 64342540 its reverse (4524346), we get a palindrome (68866886).

The spelling of 64342540 in words is "sixty-four million, three hundred forty-two thousand, five hundred forty".