65652993 has 18 divisors (see below), whose sum is σ = 110315634. Its totient is φ = 37515744.

The previous prime is 65652991. The next prime is 65653039. The reversal of 65652993 is 39925656.

It can be written as a sum of positive squares in only one way, i.e., 42928704 + 22724289 = 6552^2 + 4767^2 .

It is not a de Polignac number, because 65652993 - 2¹ = 65652991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65652991) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 73996 + ... + 74877.

Almost surely, 2^65652993 is an apocalyptic number.

65652993 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

65652993 is a deficient number, since it is larger than the sum of its proper divisors (44662641).

65652993 is a wasteful number, since it uses less digits than its factorization.

65652993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148893 (or 148883 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 65652993 is about 8102.6534542704. The cubic root of 65652993 is about 403.4145053636.

The spelling of 65652993 in words is "sixty-five million, six hundred fifty-two thousand, nine hundred ninety-three".