7742864 has 10 divisors (see below), whose sum is σ = 15001830. Its totient is φ = 3871424.

The previous prime is 7742843. The next prime is 7742887. The reversal of 7742864 is 4682477.

It can be written as a sum of positive squares in only one way, i.e., 7333264 + 409600 = 2708^2 + 640^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 241949 + ... + 241980.

It is an arithmetic number, because the mean of its divisors is an integer number (1500183).

Almost surely, 2^7742864 is an apocalyptic number.

It is an amenable number.

7742864 is a deficient number, since it is larger than the sum of its proper divisors (7258966).

7742864 is a wasteful number, since it uses less digits than its factorization.

7742864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483937 (or 483931 counting only the distinct ones).

The product of its digits is 75264, while the sum is 38.

The square root of 7742864 is about 2782.6002228132. The cubic root of 7742864 is about 197.8338230913.

The spelling of 7742864 in words is "seven million, seven hundred forty-two thousand, eight hundred sixty-four".