6921774954 has 12 divisors (see below), whose sum is σ = 14997179106. Its totient is φ = 2307258312.

The previous prime is 6921774947. The next prime is 6921774983. The reversal of 6921774954 is 4594771296.

6921774954 is a `hidden beast` number, since 69 + 21 + 77 + 495 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5753981025 + 1167793929 = 75855^2 + 34173^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6921774954.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 192271509 + ... + 192271544.

Almost surely, 2^6921774954 is an apocalyptic number.

6921774954 is an abundant number, since it is smaller than the sum of its proper divisors (8075404152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6921774954 is a wasteful number, since it uses less digits than its factorization.

6921774954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384543061 (or 384543058 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 6921774954 is about 83197.2052054635. The cubic root of 6921774954 is about 1905.7788007527.

It can be divided in two parts, 6921 and 774954, that added together give a triangular number (781875 = T₁₂₅₀).

The spelling of 6921774954 in words is "six billion, nine hundred twenty-one million, seven hundred seventy-four thousand, nine hundred fifty-four".