774220072 has 8 divisors (see below), whose sum is σ = 1451662650. Its totient is φ = 387110032.

The previous prime is 774220039. The next prime is 774220081. The reversal of 774220072 is 270022477.

It can be written as a sum of positive squares in only one way, i.e., 658743556 + 115476516 = 25666^2 + 10746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48388747 + ... + 48388762.

Almost surely, 2^774220072 is an apocalyptic number.

It is an amenable number.

774220072 is a deficient number, since it is larger than the sum of its proper divisors (677442578).

774220072 is a wasteful number, since it uses less digits than its factorization.

774220072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96777515 (or 96777511 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 774220072 is about 27824.8103677276. The cubic root of 774220072 is about 918.2370429074.

The spelling of 774220072 in words is "seven hundred seventy-four million, two hundred twenty thousand, seventy-two".