65397953 has 4 divisors (see below), whose sum is σ = 65580480. Its totient is φ = 65215428.

The previous prime is 65397923. The next prime is 65397977. The reversal of 65397953 is 35979356.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65397953 - 2⁶ = 65397889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65397898 and 65397907.

It is not an unprimeable number, because it can be changed into a prime (65397923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90725 + ... + 91442.

It is an arithmetic number, because the mean of its divisors is an integer number (16395120).

Almost surely, 2^65397953 is an apocalyptic number.

It is an amenable number.

65397953 is a deficient number, since it is larger than the sum of its proper divisors (182527).

65397953 is a wasteful number, since it uses less digits than its factorization.

65397953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182526.

The product of its digits is 765450, while the sum is 47.

The square root of 65397953 is about 8086.9000859415. The cubic root of 65397953 is about 402.8914505059.

The spelling of 65397953 in words is "sixty-five million, three hundred ninety-seven thousand, nine hundred fifty-three".