771401260 has 24 divisors (see below), whose sum is σ = 1851363360. Its totient is φ = 264480384.

The previous prime is 771401251. The next prime is 771401287. The reversal of 771401260 is 62104177.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2754865 + ... + 2755144.

It is an arithmetic number, because the mean of its divisors is an integer number (77140140).

Almost surely, 2^771401260 is an apocalyptic number.

771401260 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

771401260 is an abundant number, since it is smaller than the sum of its proper divisors (1079962100).

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

771401260 is a wasteful number, since it uses less digits than its factorization.

771401260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510025 (or 5510023 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 771401260 is about 27774.1113269174. Note that the first 3 decimals coincide. The cubic root of 771401260 is about 917.1213027796.

It can be divided in two parts, 77140 and 1260, that added together give a square (78400 = 280²).

The spelling of 771401260 in words is "seven hundred seventy-one million, four hundred one thousand, two hundred sixty".