771409964 has 18 divisors (see below), whose sum is σ = 1461800340. Its totient is φ = 356035056.

The previous prime is 771409963. The next prime is 771409967. The reversal of 771409964 is 469904177.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (771409963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 569894 + ... + 571245.

It is an arithmetic number, because the mean of its divisors is an integer number (81211130).

Almost surely, 2^771409964 is an apocalyptic number.

It is an amenable number.

771409964 is a deficient number, since it is larger than the sum of its proper divisors (690390376).

771409964 is a wasteful number, since it uses less digits than its factorization.

771409964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141169 (or 1141154 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 771409964 is about 27774.2680191576. The cubic root of 771409964 is about 917.1247521706.

The spelling of 771409964 in words is "seven hundred seventy-one million, four hundred nine thousand, nine hundred sixty-four".