802660641 has 4 divisors (see below), whose sum is σ = 1070214192. Its totient is φ = 535107092.

The previous prime is 802660597. The next prime is 802660667. The reversal of 802660641 is 146066208.

It is a happy number.

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 802660641 - 2⁶ = 802660577 is a prime.

It is a super-2 number, since 2×802660641² = 1288528209221061762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (802660541) 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, 133776771 + ... + 133776776.

It is an arithmetic number, because the mean of its divisors is an integer number (267553548).

Almost surely, 2^802660641 is an apocalyptic number.

It is an amenable number.

802660641 is a deficient number, since it is larger than the sum of its proper divisors (267553551).

802660641 is a wasteful number, since it uses less digits than its factorization.

802660641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267553550.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 802660641 is about 28331.2661383144. The cubic root of 802660641 is about 929.3457613911.

The spelling of 802660641 in words is "eight hundred two million, six hundred sixty thousand, six hundred forty-one".