2663762642 has 4 divisors (see below), whose sum is σ = 3995643966. Its totient is φ = 1331881320.

The previous prime is 2663762639. The next prime is 2663762659. The reversal of 2663762642 is 2462673662.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2462673662 = 2 ⋅1231336831.

It can be written as a sum of positive squares in only one way, i.e., 2212667521 + 451095121 = 47039^2 + 21239^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2663762593 and 2663762602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665940659 + ... + 665940662.

Almost surely, 2^2663762642 is an apocalyptic number.

2663762642 is a deficient number, since it is larger than the sum of its proper divisors (1331881324).

2663762642 is a wasteful number, since it uses less digits than its factorization.

2663762642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331881323.

The product of its digits is 870912, while the sum is 44.

The square root of 2663762642 is about 51611.6521921165. The cubic root of 2663762642 is about 1386.2189812996.

The spelling of 2663762642 in words is "two billion, six hundred sixty-three million, seven hundred sixty-two thousand, six hundred forty-two".