775740072 has 16 divisors (see below), whose sum is σ = 1939350240. Its totient is φ = 258580016.

The previous prime is 775740013. The next prime is 775740089. The reversal of 775740072 is 270047577.

It is a self number, because there is not a number n which added to its sum of digits gives 775740072.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16161228 + ... + 16161275.

It is an arithmetic number, because the mean of its divisors is an integer number (121209390).

Almost surely, 2^775740072 is an apocalyptic number.

It is an amenable number.

775740072 is an abundant number, since it is smaller than the sum of its proper divisors (1163610168).

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

775740072 is a wasteful number, since it uses less digits than its factorization.

775740072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32322512 (or 32322508 counting only the distinct ones).

The product of its (nonzero) digits is 96040, while the sum is 39.

The square root of 775740072 is about 27852.1107279143. The cubic root of 775740072 is about 918.8375646283.

The spelling of 775740072 in words is "seven hundred seventy-five million, seven hundred forty thousand, seventy-two".