136678946 has 16 divisors (see below), whose sum is σ = 217297080. Its totient is φ = 64254720.

The previous prime is 136678939. The next prime is 136679021. The reversal of 136678946 is 649876631.

It can be written as a sum of positive squares in 4 ways, for example, as 112126921 + 24552025 = 10589^2 + 4955^2 .

It is a super-2 number, since 2×136678946² = 37362268559341832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136678894 and 136678903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58040 + ... + 60348.

Almost surely, 2^136678946 is an apocalyptic number.

136678946 is a deficient number, since it is larger than the sum of its proper divisors (80618134).

136678946 is a wasteful number, since it uses less digits than its factorization.

136678946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069.

The product of its digits is 1306368, while the sum is 50.

The square root of 136678946 is about 11690.9771191291. The cubic root of 136678946 is about 515.1106633713.

The spelling of 136678946 in words is "one hundred thirty-six million, six hundred seventy-eight thousand, nine hundred forty-six".