65219652 has 18 divisors (see below), whose sum is σ = 164860878. Its totient is φ = 21739872.

The previous prime is 65219621. The next prime is 65219653. The reversal of 65219652 is 25691256.

It can be written as a sum of positive squares in only one way, i.e., 57062916 + 8156736 = 7554^2 + 2856^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×65219652² = 8507206014002208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1811657 = 65219652 / (6 + 5 + 2 + 1 + 9 + 6 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (65219653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 905793 + ... + 905864.

Almost surely, 2^65219652 is an apocalyptic number.

It is an amenable number.

65219652 is an abundant number, since it is smaller than the sum of its proper divisors (99641226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65219652 is a wasteful number, since it uses less digits than its factorization.

65219652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811667 (or 1811662 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 65219652 is about 8075.8684981864. The cubic root of 65219652 is about 402.5249694526.

The spelling of 65219652 in words is "sixty-five million, two hundred nineteen thousand, six hundred fifty-two".