137784474 has 12 divisors (see below), whose sum is σ = 298533066. Its totient is φ = 45928152.

The previous prime is 137784463. The next prime is 137784487. The reversal of 137784474 is 474487731.

137784474 is a `hidden beast` number, since 137 + 78 + 447 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 130988025 + 6796449 = 11445^2 + 2607^2 .

It is a super-3 number, since 3×137784474³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3827329 + ... + 3827364.

Almost surely, 2^137784474 is an apocalyptic number.

137784474 is an abundant number, since it is smaller than the sum of its proper divisors (160748592).

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

137784474 is a wasteful number, since it uses less digits than its factorization.

137784474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7654701 (or 7654698 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 137784474 is about 11738.1631442062. The cubic root of 137784474 is about 516.4957602376.

The spelling of 137784474 in words is "one hundred thirty-seven million, seven hundred eighty-four thousand, four hundred seventy-four".