766072646 has 16 divisors (see below), whose sum is σ = 1182021120. Its totient is φ = 372183240.

The previous prime is 766072639. The next prime is 766072711. The reversal of 766072646 is 646270667.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 766072597 and 766072606.

It is a congruent number.

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, 16250 + ... + 42381.

It is an arithmetic number, because the mean of its divisors is an integer number (73876320).

Almost surely, 2^766072646 is an apocalyptic number.

766072646 is a deficient number, since it is larger than the sum of its proper divisors (415948474).

766072646 is a wasteful number, since it uses less digits than its factorization.

766072646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58819.

The product of its (nonzero) digits is 508032, while the sum is 44.

The square root of 766072646 is about 27678.0173784178. The cubic root of 766072646 is about 915.0046864900.

The spelling of 766072646 in words is "seven hundred sixty-six million, seventy-two thousand, six hundred forty-six".