65373857 has 18 divisors (see below), whose sum is σ = 72508338. Its totient is φ = 58735872.

The previous prime is 65373853. The next prime is 65373863. The reversal of 65373857 is 75837356.

65373857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 9 ways, for example, as 11806096 + 53567761 = 3436^2 + 7319^2 .

It is not a de Polignac number, because 65373857 - 2² = 65373853 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65373853) 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 17 ways as a sum of consecutive naturals, for example, 1233443 + ... + 1233495.

It is an arithmetic number, because the mean of its divisors is an integer number (4028241).

Almost surely, 2^65373857 is an apocalyptic number.

It is an amenable number.

65373857 is a deficient number, since it is larger than the sum of its proper divisors (7134481).

65373857 is an equidigital number, since it uses as much as digits as its factorization.

65373857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 107 counting only the distinct ones).

The product of its digits is 529200, while the sum is 44.

The square root of 65373857 is about 8085.4101318362. The cubic root of 65373857 is about 402.8419623873.

The spelling of 65373857 in words is "sixty-five million, three hundred seventy-three thousand, eight hundred fifty-seven".