136628377 has 4 divisors (see below), whose sum is σ = 141035776. Its totient is φ = 132220980.

The previous prime is 136628369. The next prime is 136628399. The reversal of 136628377 is 773826631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 773826631 = 11657 ⋅66383.

It is a cyclic number.

It is not a de Polignac number, because 136628377 - 2³ = 136628369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136628347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2203653 + ... + 2203714.

It is an arithmetic number, because the mean of its divisors is an integer number (35258944).

Almost surely, 2^136628377 is an apocalyptic number.

It is an amenable number.

136628377 is a deficient number, since it is larger than the sum of its proper divisors (4407399).

136628377 is an equidigital number, since it uses as much as digits as its factorization.

136628377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407398.

The product of its digits is 254016, while the sum is 43.

The square root of 136628377 is about 11688.8141827989. The cubic root of 136628377 is about 515.0471279962.

The spelling of 136628377 in words is "one hundred thirty-six million, six hundred twenty-eight thousand, three hundred seventy-seven".