64540202 has 16 divisors (see below), whose sum is σ = 100665600. Its totient is φ = 31000320.

The previous prime is 64540199. The next prime is 64540213. The reversal of 64540202 is 20204546.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4874 + ... + 12362.

It is an arithmetic number, because the mean of its divisors is an integer number (6291600).

Almost surely, 2^64540202 is an apocalyptic number.

64540202 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

64540202 is a deficient number, since it is larger than the sum of its proper divisors (36125398).

64540202 is a wasteful number, since it uses less digits than its factorization.

64540202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 64540202 is about 8033.6916794211. The cubic root of 64540202 is about 401.1222691684.

Adding to 64540202 its reverse (20204546), we get a palindrome (84744748).

The spelling of 64540202 in words is "sixty-four million, five hundred forty thousand, two hundred two".