136845406 has 4 divisors (see below), whose sum is σ = 205268112. Its totient is φ = 68422702.

The previous prime is 136845389. The next prime is 136845407. The reversal of 136845406 is 604548631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604548631 = 19 ⋅31818349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136845407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34211350 + ... + 34211353.

It is an arithmetic number, because the mean of its divisors is an integer number (51317028).

Almost surely, 2^136845406 is an apocalyptic number.

136845406 is a deficient number, since it is larger than the sum of its proper divisors (68422706).

136845406 is an equidigital number, since it uses as much as digits as its factorization.

136845406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68422705.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 136845406 is about 11698.0941182741. The cubic root of 136845406 is about 515.3196946757.

The spelling of 136845406 in words is "one hundred thirty-six million, eight hundred forty-five thousand, four hundred six".