7748668477 has 16 divisors (see below), whose sum is σ = 8499758400. Its totient is φ = 7005450240.

The previous prime is 7748668453. The next prime is 7748668517.

7748668477 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7748668477 - 2⁷ = 7748668349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7748638477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2087299 + ... + 2091007.

It is an arithmetic number, because the mean of its divisors is an integer number (531234900).

Almost surely, 2^7748668477 is an apocalyptic number.

It is an amenable number.

7748668477 is a deficient number, since it is larger than the sum of its proper divisors (751089923).

7748668477 is a wasteful number, since it uses less digits than its factorization.

7748668477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4716.

The product of its digits is 88510464, while the sum is 64.

The square root of 7748668477 is about 88026.5214409839. The cubic root of 7748668477 is about 1978.8324645058.

The spelling of 7748668477 in words is "seven billion, seven hundred forty-eight million, six hundred sixty-eight thousand, four hundred seventy-seven".