1264590065 has 8 divisors (see below), whose sum is σ = 1521737280. Its totient is φ = 1008852592.

The previous prime is 1264590059. The next prime is 1264590079. The reversal of 1264590065 is 5600954621.

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 1264590065 - 2¹⁰ = 1264589041 is a prime.

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, 350459 + ... + 354048.

It is an arithmetic number, because the mean of its divisors is an integer number (190217160).

Almost surely, 2^1264590065 is an apocalyptic number.

It is an amenable number.

1264590065 is a deficient number, since it is larger than the sum of its proper divisors (257147215).

1264590065 is an equidigital number, since it uses as much as digits as its factorization.

1264590065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704871.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1264590065 is about 35561.0751384150. The cubic root of 1264590065 is about 1081.3922559331.

The spelling of 1264590065 in words is "one billion, two hundred sixty-four million, five hundred ninety thousand, sixty-five".