64540102 has 8 divisors (see below), whose sum is σ = 105611112. Its totient is φ = 29336400.

The previous prime is 64540087. The next prime is 64540123. The reversal of 64540102 is 20104546.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 2933641 = 64540102 / (6 + 4 + 5 + 4 + 0 + 1 + 0 + 2).

It is a congruent number.

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, 1466799 + ... + 1466842.

It is an arithmetic number, because the mean of its divisors is an integer number (13201389).

Almost surely, 2^64540102 is an apocalyptic number.

64540102 is a deficient number, since it is larger than the sum of its proper divisors (41071010).

64540102 is a wasteful number, since it uses less digits than its factorization.

64540102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933654.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 64540102 is about 8033.6854556299. The cubic root of 64540102 is about 401.1220619990.

Adding to 64540102 its reverse (20104546), we get a palindrome (84644648).

Subtracting from 64540102 its reverse (20104546), we obtain a square (44435556 = 6666²).

The spelling of 64540102 in words is "sixty-four million, five hundred forty thousand, one hundred two".