6465261 has 16 divisors (see below), whose sum is σ = 9497088. Its totient is φ = 3879600.

The previous prime is 6465257. The next prime is 6465271. The reversal of 6465261 is 1625646.

It is not a de Polignac number, because 6465261 - 2² = 6465257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2616 + ... + 4446.

It is an arithmetic number, because the mean of its divisors is an integer number (593568).

Almost surely, 2^6465261 is an apocalyptic number.

It is an amenable number.

6465261 is a deficient number, since it is larger than the sum of its proper divisors (3031827).

6465261 is a wasteful number, since it uses less digits than its factorization.

6465261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952.

The product of its digits is 8640, while the sum is 30.

The square root of 6465261 is about 2542.6877511798. The cubic root of 6465261 is about 186.2924927444.

Subtracting from 6465261 its product of digits (8640), we obtain a triangular number (6456621 = T₃₅₉₃).

The spelling of 6465261 in words is "six million, four hundred sixty-five thousand, two hundred sixty-one".