7240768777 has 8 divisors (see below), whose sum is σ = 7900799040. Its totient is φ = 6581034960.

The previous prime is 7240768709. The next prime is 7240768783. The reversal of 7240768777 is 7778670427.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7240768777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7240738777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21402 + ... + 122227.

It is an arithmetic number, because the mean of its divisors is an integer number (987599880).

Almost surely, 2^7240768777 is an apocalyptic number.

It is an amenable number.

7240768777 is a deficient number, since it is larger than the sum of its proper divisors (660030263).

7240768777 is a wasteful number, since it uses less digits than its factorization.

7240768777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148223.

The product of its (nonzero) digits is 6453888, while the sum is 55.

The square root of 7240768777 is about 85092.7069554142. The cubic root of 7240768777 is about 1934.6165248627.

The spelling of 7240768777 in words is "seven billion, two hundred forty million, seven hundred sixty-eight thousand, seven hundred seventy-seven".