771432066 has 32 divisors (see below), whose sum is σ = 1746645120. Its totient is φ = 252291312.

The previous prime is 771432061. The next prime is 771432073. The reversal of 771432066 is 660234177.

It is a self number, because there is not a number n which added to its sum of digits gives 771432066.

It is not an unprimeable number, because it can be changed into a prime (771432061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131910 + ... + 137633.

It is an arithmetic number, because the mean of its divisors is an integer number (54582660).

Almost surely, 2^771432066 is an apocalyptic number.

771432066 is an abundant number, since it is smaller than the sum of its proper divisors (975213054).

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

771432066 is a wasteful number, since it uses less digits than its factorization.

771432066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269607 (or 269601 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 771432066 is about 27774.6659025811. The cubic root of 771432066 is about 917.1335110661.

The spelling of 771432066 in words is "seven hundred seventy-one million, four hundred thirty-two thousand, sixty-six".