65773997 has 8 divisors (see below), whose sum is σ = 68895360. Its totient is φ = 62674480.

The previous prime is 65773993. The next prime is 65774017. The reversal of 65773997 is 79937756.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65773997 - 2² = 65773993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65773993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872 + ... + 11502.

It is an arithmetic number, because the mean of its divisors is an integer number (8611920).

Almost surely, 2^65773997 is an apocalyptic number.

It is an amenable number.

65773997 is a deficient number, since it is larger than the sum of its proper divisors (3121363).

65773997 is a wasteful number, since it uses less digits than its factorization.

65773997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923.

The product of its digits is 2500470, while the sum is 53.

The square root of 65773997 is about 8110.1169535340. The cubic root of 65773997 is about 403.6621955670.

The spelling of 65773997 in words is "sixty-five million, seven hundred seventy-three thousand, nine hundred ninety-seven".