65431868 has 6 divisors (see below), whose sum is σ = 114505776. Its totient is φ = 32715932.

The previous prime is 65431867. The next prime is 65431897. The reversal of 65431868 is 86813456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65431867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8178980 + ... + 8178987.

It is an arithmetic number, because the mean of its divisors is an integer number (19084296).

Almost surely, 2^65431868 is an apocalyptic number.

It is an amenable number.

65431868 is a deficient number, since it is larger than the sum of its proper divisors (49073908).

65431868 is a wasteful number, since it uses less digits than its factorization.

65431868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16357971 (or 16357969 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 65431868 is about 8088.9967239454. The cubic root of 65431868 is about 402.9610841950.

The spelling of 65431868 in words is "sixty-five million, four hundred thirty-one thousand, eight hundred sixty-eight".