65073987 has 12 divisors (see below), whose sum is σ = 102540984. Its totient is φ = 39438720.

The previous prime is 65073979. The next prime is 65074027. The reversal of 65073987 is 78937056.

It is a happy number.

It is not a de Polignac number, because 65073987 - 2³ = 65073979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65073937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328558 + ... + 328755.

It is an arithmetic number, because the mean of its divisors is an integer number (8545082).

Almost surely, 2^65073987 is an apocalyptic number.

65073987 is a deficient number, since it is larger than the sum of its proper divisors (37466997).

65073987 is a wasteful number, since it uses less digits than its factorization.

65073987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657330 (or 657327 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 65073987 is about 8066.8449222729. The cubic root of 65073987 is about 402.2250725961.

The spelling of 65073987 in words is "sixty-five million, seventy-three thousand, nine hundred eighty-seven".