65397455 has 4 divisors (see below), whose sum is σ = 78476952. Its totient is φ = 52317960.

The previous prime is 65397433. The next prime is 65397457. The reversal of 65397455 is 55479356.

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

It is not a de Polignac number, because 65397455 - 2¹⁰ = 65396431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65397457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6539741 + ... + 6539750.

It is an arithmetic number, because the mean of its divisors is an integer number (19619238).

Almost surely, 2^65397455 is an apocalyptic number.

65397455 is a deficient number, since it is larger than the sum of its proper divisors (13079497).

65397455 is a wasteful number, since it uses less digits than its factorization.

65397455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13079496.

The product of its digits is 567000, while the sum is 44.

The square root of 65397455 is about 8086.8692953454. The cubic root of 65397455 is about 402.8904278416.

The spelling of 65397455 in words is "sixty-five million, three hundred ninety-seven thousand, four hundred fifty-five".