7065778401 has 24 divisors (see below), whose sum is σ = 11136849984. Its totient is φ = 4281176160.

The previous prime is 7065778397. The next prime is 7065778451. The reversal of 7065778401 is 1048775607.

7065778401 is a `hidden beast` number, since 70 + 6 + 577 + 8 + 4 + 0 + 1 = 666.

It is not a de Polignac number, because 7065778401 - 2² = 7065778397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7065778451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 531700 + ... + 544826.

It is an arithmetic number, because the mean of its divisors is an integer number (464035416).

Almost surely, 2^7065778401 is an apocalyptic number.

It is an amenable number.

7065778401 is a deficient number, since it is larger than the sum of its proper divisors (4071071583).

7065778401 is a wasteful number, since it uses less digits than its factorization.

7065778401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18581 (or 18578 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 7065778401 is about 84058.1846163715. The cubic root of 7065778401 is about 1918.9043952818.

The spelling of 7065778401 in words is "seven billion, sixty-five million, seven hundred seventy-eight thousand, four hundred one".