65436493 has 4 divisors (see below), whose sum is σ = 65802240. Its totient is φ = 65070748.

The previous prime is 65436439. The next prime is 65436563. The reversal of 65436493 is 39463456.

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 65436493 - 2¹⁷ = 65305421 is a prime.

It is a super-2 number, since 2×65436493² = 8563869232278098, 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 (65436193) 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, 182605 + ... + 182962.

It is an arithmetic number, because the mean of its divisors is an integer number (16450560).

Almost surely, 2^65436493 is an apocalyptic number.

It is an amenable number.

65436493 is a deficient number, since it is larger than the sum of its proper divisors (365747).

65436493 is a wasteful number, since it uses less digits than its factorization.

65436493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365746.

The product of its digits is 233280, while the sum is 40.

The square root of 65436493 is about 8089.2826010716. The cubic root of 65436493 is about 402.9705783002.

The spelling of 65436493 in words is "sixty-five million, four hundred thirty-six thousand, four hundred ninety-three".