65422819 has 32 divisors (see below), whose sum is σ = 84225024. Its totient is φ = 49351680.

The previous prime is 65422813. The next prime is 65422831. The reversal of 65422819 is 91822456.

It is not a de Polignac number, because 65422819 - 2¹³ = 65414627 is a prime.

It is a super-2 number, since 2×65422819² = 8560290491813522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65422813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578907 + ... + 579019.

It is an arithmetic number, because the mean of its divisors is an integer number (2632032).

Almost surely, 2^65422819 is an apocalyptic number.

65422819 is a deficient number, since it is larger than the sum of its proper divisors (18802205).

65422819 is a wasteful number, since it uses less digits than its factorization.

65422819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307.

The product of its digits is 34560, while the sum is 37.

The square root of 65422819 is about 8088.4373645346. The cubic root of 65422819 is about 402.9425072994.

The spelling of 65422819 in words is "sixty-five million, four hundred twenty-two thousand, eight hundred nineteen".