136714821 has 4 divisors (see below), whose sum is σ = 182286432. Its totient is φ = 91143212.

The previous prime is 136714813. The next prime is 136714841. The reversal of 136714821 is 128417631.

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: 128417631 = 3 ⋅42805877.

It is a cyclic number.

It is not a de Polignac number, because 136714821 - 2³ = 136714813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136714841) 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, 22785801 + ... + 22785806.

It is an arithmetic number, because the mean of its divisors is an integer number (45571608).

Almost surely, 2^136714821 is an apocalyptic number.

It is an amenable number.

136714821 is a deficient number, since it is larger than the sum of its proper divisors (45571611).

136714821 is an equidigital number, since it uses as much as digits as its factorization.

136714821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45571610.

The product of its digits is 8064, while the sum is 33.

The square root of 136714821 is about 11692.5113213544. The cubic root of 136714821 is about 515.1557275625.

The spelling of 136714821 in words is "one hundred thirty-six million, seven hundred fourteen thousand, eight hundred twenty-one".