65554631 has 4 divisors (see below), whose sum is σ = 65768472. Its totient is φ = 65340792.

The previous prime is 65554603. The next prime is 65554667. The reversal of 65554631 is 13645556.

65554631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65554631 is a prime.

It is a super-2 number, since 2×65554631² = 8594819291092322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65554591 and 65554600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65550631) 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 3 ways as a sum of consecutive naturals, for example, 106460 + ... + 107073.

It is an arithmetic number, because the mean of its divisors is an integer number (16442118).

Almost surely, 2^65554631 is an apocalyptic number.

65554631 is a deficient number, since it is larger than the sum of its proper divisors (213841).

65554631 is a wasteful number, since it uses less digits than its factorization.

65554631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213840.

The product of its digits is 54000, while the sum is 35.

The square root of 65554631 is about 8096.5814391013. The cubic root of 65554631 is about 403.2129380579.

The spelling of 65554631 in words is "sixty-five million, five hundred fifty-four thousand, six hundred thirty-one".