65423565 has 64 divisors (see below), whose sum is σ = 127526400. Its totient is φ = 31675392.

The previous prime is 65423563. The next prime is 65423581. The reversal of 65423565 is 56532456.

It is a happy number.

It is not a de Polignac number, because 65423565 - 2¹ = 65423563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65423563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66064 + ... + 67046.

It is an arithmetic number, because the mean of its divisors is an integer number (1992600).

Almost surely, 2^65423565 is an apocalyptic number.

It is an amenable number.

65423565 is a deficient number, since it is larger than the sum of its proper divisors (62102835).

65423565 is a wasteful number, since it uses less digits than its factorization.

65423565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1037 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 65423565 is about 8088.4834796147. The cubic root of 65423565 is about 402.9440388443.

It can be divided in two parts, 6 and 5423565, that added together give a triangular number (5423571 = T₃₂₉₃).

The spelling of 65423565 in words is "sixty-five million, four hundred twenty-three thousand, five hundred sixty-five".