65140100 has 18 divisors (see below), whose sum is σ = 141354234. Its totient is φ = 26056000.

The previous prime is 65140099. The next prime is 65140111. The reversal of 65140100 is 104156.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1012036 + 64128064 = 1006^2 + 8008^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 325601 + ... + 325800.

It is an arithmetic number, because the mean of its divisors is an integer number (7853013).

Almost surely, 2^65140100 is an apocalyptic number.

It is an amenable number.

65140100 is an abundant number, since it is smaller than the sum of its proper divisors (76214134).

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

65140100 is a wasteful number, since it uses less digits than its factorization.

65140100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651415 (or 651408 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 65140100 is about 8070.9417046588. The cubic root of 65140100 is about 402.3612422439.

Adding to 65140100 its reverse (104156), we get a palindrome (65244256).

The spelling of 65140100 in words is "sixty-five million, one hundred forty thousand, one hundred".