65540901 has 16 divisors (see below), whose sum is σ = 90896960. Its totient is φ = 41973120.

The previous prime is 65540897. The next prime is 65540903. The reversal of 65540901 is 10904556.

It is not a de Polignac number, because 65540901 - 2² = 65540897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65540903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3705 + ... + 12033.

It is an arithmetic number, because the mean of its divisors is an integer number (5681060).

Almost surely, 2^65540901 is an apocalyptic number.

65540901 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

65540901 is a deficient number, since it is larger than the sum of its proper divisors (25356059).

65540901 is a wasteful number, since it uses less digits than its factorization.

65540901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8436.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 65540901 is about 8095.7335059894. The cubic root of 65540901 is about 403.1847859650.

The spelling of 65540901 in words is "sixty-five million, five hundred forty thousand, nine hundred one".