65021763 has 4 divisors (see below), whose sum is σ = 86695688. Its totient is φ = 43347840.

The previous prime is 65021731. The next prime is 65021767. The reversal of 65021763 is 36712056.

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

It is not a de Polignac number, because 65021763 - 2⁵ = 65021731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65021763.

It is not an unprimeable number, because it can be changed into a prime (65021767) 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, 10836958 + ... + 10836963.

It is an arithmetic number, because the mean of its divisors is an integer number (21673922).

Almost surely, 2^65021763 is an apocalyptic number.

65021763 is a deficient number, since it is larger than the sum of its proper divisors (21673925).

65021763 is a wasteful number, since it uses less digits than its factorization.

65021763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21673924.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 65021763 is about 8063.6073193082. The cubic root of 65021763 is about 402.1174442131.

The spelling of 65021763 in words is "sixty-five million, twenty-one thousand, seven hundred sixty-three".