7479681669 has 24 divisors (see below), whose sum is σ = 11308883040. Its totient is φ = 4939834896.

The previous prime is 7479681647. The next prime is 7479681691. The reversal of 7479681669 is 9661869747.

It is an interprime number because it is at equal distance from previous prime (7479681647) and next prime (7479681691).

It is not a de Polignac number, because 7479681669 - 2⁷ = 7479681541 is a prime.

It is a super-2 number, since 2×7479681669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7479631669) 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, 117834 + ... + 169835.

It is an arithmetic number, because the mean of its divisors is an integer number (471203460).

Almost surely, 2^7479681669 is an apocalyptic number.

It is an amenable number.

7479681669 is a deficient number, since it is larger than the sum of its proper divisors (3829201371).

7479681669 is a wasteful number, since it uses less digits than its factorization.

7479681669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287791 (or 287779 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 7479681669 is about 86485.1528818675. The cubic root of 7479681669 is about 1955.6645869034.

The spelling of 7479681669 in words is "seven billion, four hundred seventy-nine million, six hundred eighty-one thousand, six hundred sixty-nine".