65777493 has 8 divisors (see below), whose sum is σ = 91516608. Its totient is φ = 41945024.

The previous prime is 65777419. The next prime is 65777519. The reversal of 65777493 is 39477756.

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 65777493 - 2¹⁷ = 65646421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65777893) 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, 476580 + ... + 476717.

It is an arithmetic number, because the mean of its divisors is an integer number (11439576).

Almost surely, 2^65777493 is an apocalyptic number.

It is an amenable number.

65777493 is a deficient number, since it is larger than the sum of its proper divisors (25739115).

65777493 is a wasteful number, since it uses less digits than its factorization.

65777493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953323.

The product of its digits is 1111320, while the sum is 48.

The square root of 65777493 is about 8110.3324839368. The cubic root of 65777493 is about 403.6693472181.

The spelling of 65777493 in words is "sixty-five million, seven hundred seventy-seven thousand, four hundred ninety-three".