65942019 has 40 divisors (see below), whose sum is σ = 115747632. Its totient is φ = 36884160.

The previous prime is 65941973. The next prime is 65942039. The reversal of 65942019 is 91024956.

65942019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65942019 - 2⁹ = 65941507 is a prime.

It is a super-2 number, since 2×65942019² = 8696699739592722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65942039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8737 + ... + 14429.

Almost surely, 2^65942019 is an apocalyptic number.

65942019 is a deficient number, since it is larger than the sum of its proper divisors (49805613).

65942019 is a wasteful number, since it uses less digits than its factorization.

65942019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5729 (or 5720 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 65942019 is about 8120.4691366940. The cubic root of 65942019 is about 404.0056264125.

The spelling of 65942019 in words is "sixty-five million, nine hundred forty-two thousand, nineteen".