766705653 has 24 divisors (see below), whose sum is σ = 1266408000. Its totient is φ = 437863104.

The previous prime is 766705637. The next prime is 766705669. The reversal of 766705653 is 356507667.

It is an interprime number because it is at equal distance from previous prime (766705637) and next prime (766705669).

It is not a de Polignac number, because 766705653 - 2⁴ = 766705637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766705599 and 766705608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766705633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184998 + ... + 189096.

It is an arithmetic number, because the mean of its divisors is an integer number (52767000).

Almost surely, 2^766705653 is an apocalyptic number.

It is an amenable number.

766705653 is a deficient number, since it is larger than the sum of its proper divisors (499702347).

766705653 is a wasteful number, since it uses less digits than its factorization.

766705653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7081 (or 7078 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 45.

The square root of 766705653 is about 27689.4502112267. The cubic root of 766705653 is about 915.2566403638.

The spelling of 766705653 in words is "seven hundred sixty-six million, seven hundred five thousand, six hundred fifty-three".