65746381 has 4 divisors (see below), whose sum is σ = 67867264. Its totient is φ = 63625500.

The previous prime is 65746379. The next prime is 65746409. The reversal of 65746381 is 18364756.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65746381 - 2¹ = 65746379 is a prime.

It is a super-2 number, since 2×65746381² = 8645173229194322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65746321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060395 + ... + 1060456.

It is an arithmetic number, because the mean of its divisors is an integer number (16966816).

Almost surely, 2^65746381 is an apocalyptic number.

It is an amenable number.

65746381 is a deficient number, since it is larger than the sum of its proper divisors (2120883).

65746381 is a wasteful number, since it uses less digits than its factorization.

65746381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120882.

The product of its digits is 120960, while the sum is 40.

The square root of 65746381 is about 8108.4142099427. The cubic root of 65746381 is about 403.6056935236.

The spelling of 65746381 in words is "sixty-five million, seven hundred forty-six thousand, three hundred eighty-one".