788746661 has 4 divisors (see below), whose sum is σ = 790366752. Its totient is φ = 787126572.

The previous prime is 788746627. The next prime is 788746681. The reversal of 788746661 is 166647887.

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, and also an emirpimes, since its reverse is a distinct semiprime: 166647887 = 7 ⋅23806841.

It is a cyclic number.

It is not a de Polignac number, because 788746661 - 2²² = 784552357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788746681) 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, 809315 + ... + 810288.

It is an arithmetic number, because the mean of its divisors is an integer number (197591688).

Almost surely, 2^788746661 is an apocalyptic number.

It is an amenable number.

788746661 is a deficient number, since it is larger than the sum of its proper divisors (1620091).

788746661 is a wasteful number, since it uses less digits than its factorization.

788746661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620090.

The product of its digits is 2709504, while the sum is 53.

The square root of 788746661 is about 28084.6338947119. The cubic root of 788746661 is about 923.9444149424.

The spelling of 788746661 in words is "seven hundred eighty-eight million, seven hundred forty-six thousand, six hundred sixty-one".