2663213690 has 8 divisors (see below), whose sum is σ = 4793784660. Its totient is φ = 1065285472.

The previous prime is 2663213669. The next prime is 2663213711. The reversal of 2663213690 is 963123662.

It is an interprime number because it is at equal distance from previous prime (2663213669) and next prime (2663213711).

It can be written as a sum of positive squares in 2 ways, for example, as 2588062129 + 75151561 = 50873^2 + 8669^2 .

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

It is a super-2 number, since 2×2663213690² = 14185414317206832200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133160675 + ... + 133160694.

Almost surely, 2^2663213690 is an apocalyptic number.

2663213690 is a deficient number, since it is larger than the sum of its proper divisors (2130570970).

2663213690 is a wasteful number, since it uses less digits than its factorization.

2663213690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266321376.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 2663213690 is about 51606.3338166935. Note that the first 3 decimals coincide. The cubic root of 2663213690 is about 1386.1237500967.

The spelling of 2663213690 in words is "two billion, six hundred sixty-three million, two hundred thirteen thousand, six hundred ninety".