65267661 has 8 divisors (see below), whose sum is σ = 90024480. Its totient is φ = 42011312.

The previous prime is 65267651. The next prime is 65267663. The reversal of 65267661 is 16676256.

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

It is a cyclic number.

It is not a de Polignac number, because 65267661 - 2⁶ = 65267597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65267663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375015 + ... + 375188.

It is an arithmetic number, because the mean of its divisors is an integer number (11253060).

Almost surely, 2^65267661 is an apocalyptic number.

It is an amenable number.

65267661 is a deficient number, since it is larger than the sum of its proper divisors (24756819).

65267661 is a wasteful number, since it uses less digits than its factorization.

65267661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750235.

The product of its digits is 90720, while the sum is 39.

The square root of 65267661 is about 8078.8403251952. The cubic root of 65267661 is about 402.6237131127.

The spelling of 65267661 in words is "sixty-five million, two hundred sixty-seven thousand, six hundred sixty-one".