65402801 has 4 divisors (see below), whose sum is σ = 67658100. Its totient is φ = 63147504.

The previous prime is 65402783. The next prime is 65402833. The reversal of 65402801 is 10820456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49210225 + 16192576 = 7015^2 + 4024^2 .

It is a cyclic number.

It is not a de Polignac number, because 65402801 - 2⁶ = 65402737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65402851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127606 + ... + 1127663.

It is an arithmetic number, because the mean of its divisors is an integer number (16914525).

Almost surely, 2^65402801 is an apocalyptic number.

It is an amenable number.

65402801 is a deficient number, since it is larger than the sum of its proper divisors (2255299).

65402801 is a wasteful number, since it uses less digits than its factorization.

65402801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255298.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 65402801 is about 8087.1998244139. The cubic root of 65402801 is about 402.9014058098.

The spelling of 65402801 in words is "sixty-five million, four hundred two thousand, eight hundred one".