65197445 has 8 divisors (see below), whose sum is σ = 78579960. Its totient is φ = 51929280.

The previous prime is 65197427. The next prime is 65197459. The reversal of 65197445 is 54479156.

It can be written as a sum of positive squares in 4 ways, for example, as 20052484 + 45144961 = 4478^2 + 6719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65197445 - 2⁶ = 65197381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27326 + ... + 29615.

It is an arithmetic number, because the mean of its divisors is an integer number (9822495).

Almost surely, 2^65197445 is an apocalyptic number.

It is an amenable number.

65197445 is a deficient number, since it is larger than the sum of its proper divisors (13382515).

65197445 is a wasteful number, since it uses less digits than its factorization.

65197445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57175.

The product of its digits is 151200, while the sum is 41.

The square root of 65197445 is about 8074.4934825659. The cubic root of 65197445 is about 402.4792782820.

The spelling of 65197445 in words is "sixty-five million, one hundred ninety-seven thousand, four hundred forty-five".