766661002 has 8 divisors (see below), whose sum is σ = 1217638116. Its totient is φ = 360781632.

The previous prime is 766660949. The next prime is 766661089. The reversal of 766661002 is 200166667.

It can be written as a sum of positive squares in 2 ways, for example, as 736091161 + 30569841 = 27131^2 + 5529^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 22548853 = 766661002 / (7 + 6 + 6 + 6 + 6 + 1 + 0 + 0 + 2).

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, 11274393 + ... + 11274460.

Almost surely, 2^766661002 is an apocalyptic number.

766661002 is a deficient number, since it is larger than the sum of its proper divisors (450977114).

766661002 is a wasteful number, since it uses less digits than its factorization.

766661002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22548872.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 766661002 is about 27688.6439176786. The cubic root of 766661002 is about 915.2388726075.

The spelling of 766661002 in words is "seven hundred sixty-six million, six hundred sixty-one thousand, two".