65670993 has 24 divisors (see below), whose sum is σ = 101774400. Its totient is φ = 42266448.

The previous prime is 65670991. The next prime is 65671013. The reversal of 65670993 is 39907656.

It is not a de Polignac number, because 65670993 - 2¹ = 65670991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65670991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2388 + ... + 11706.

It is an arithmetic number, because the mean of its divisors is an integer number (4240600).

Almost surely, 2^65670993 is an apocalyptic number.

It is an amenable number.

65670993 is a deficient number, since it is larger than the sum of its proper divisors (36103407).

65670993 is an equidigital number, since it uses as much as digits as its factorization.

65670993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9363 (or 9351 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 65670993 is about 8103.7641253926. The cubic root of 65670993 is about 403.4513698804.

The spelling of 65670993 in words is "sixty-five million, six hundred seventy thousand, nine hundred ninety-three".