766605390 has 32 divisors (see below), whose sum is σ = 1840703616. Its totient is φ = 204333600.

The previous prime is 766605313. The next prime is 766605397. The reversal of 766605390 is 93506667.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766605397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81049 + ... + 90011.

It is an arithmetic number, because the mean of its divisors is an integer number (57521988).

Almost surely, 2^766605390 is an apocalyptic number.

766605390 is an abundant number, since it is smaller than the sum of its proper divisors (1074098226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766605390 is a wasteful number, since it uses less digits than its factorization.

766605390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11824.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 766605390 is about 27687.6396610473. The cubic root of 766605390 is about 915.2167422288.

The spelling of 766605390 in words is "seven hundred sixty-six million, six hundred five thousand, three hundred ninety".