65193945 has 16 divisors (see below), whose sum is σ = 104456832. Its totient is φ = 34721280.

The previous prime is 65193941. The next prime is 65194007. The reversal of 65193945 is 54939156.

It is not a de Polignac number, because 65193945 - 2² = 65193941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65193897 and 65193906.

It is not an unprimeable number, because it can be changed into a prime (65193941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9705 + ... + 14985.

It is an arithmetic number, because the mean of its divisors is an integer number (6528552).

Almost surely, 2^65193945 is an apocalyptic number.

It is an amenable number.

65193945 is a deficient number, since it is larger than the sum of its proper divisors (39262887).

65193945 is a wasteful number, since it uses less digits than its factorization.

65193945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112.

The product of its digits is 145800, while the sum is 42.

The square root of 65193945 is about 8074.2767477961. The cubic root of 65193945 is about 402.4720760433.

The spelling of 65193945 in words is "sixty-five million, one hundred ninety-three thousand, nine hundred forty-five".