65623775 has 12 divisors (see below), whose sum is σ = 92998512. Its totient is φ = 44999040.

The previous prime is 65623769. The next prime is 65623801. The reversal of 65623775 is 57732656.

It is not a de Polignac number, because 65623775 - 2⁶ = 65623711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187322 + ... + 187671.

It is an arithmetic number, because the mean of its divisors is an integer number (7749876).

Almost surely, 2^65623775 is an apocalyptic number.

65623775 is a deficient number, since it is larger than the sum of its proper divisors (27374737).

65623775 is a wasteful number, since it uses less digits than its factorization.

65623775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375010 (or 375005 counting only the distinct ones).

The product of its digits is 264600, while the sum is 41.

The square root of 65623775 is about 8100.8502640155. The cubic root of 65623775 is about 403.3546517126.

The spelling of 65623775 in words is "sixty-five million, six hundred twenty-three thousand, seven hundred seventy-five".