65398995 has 40 divisors (see below), whose sum is σ = 121038720. Its totient is φ = 33747840.

The previous prime is 65398967. The next prime is 65398997. The reversal of 65398995 is 59989356.

It is not a de Polignac number, because 65398995 - 2¹² = 65394899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65398997) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9951 + ... + 15159.

It is an arithmetic number, because the mean of its divisors is an integer number (3025968).

Almost surely, 2^65398995 is an apocalyptic number.

65398995 is a deficient number, since it is larger than the sum of its proper divisors (55639725).

65398995 is a wasteful number, since it uses less digits than its factorization.

65398995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257 (or 5248 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 54.

The square root of 65398995 is about 8086.9645108656. The cubic root of 65398995 is about 402.8935902806.

The spelling of 65398995 in words is "sixty-five million, three hundred ninety-eight thousand, nine hundred ninety-five".