136854961 has 2 divisors, whose sum is σ = 136854962. Its totient is φ = 136854960.

The previous prime is 136854959. The next prime is 136855001. The reversal of 136854961 is 169458631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133263936 + 3591025 = 11544^2 + 1895^2 .

It is a cyclic number.

It is not a de Polignac number, because 136854961 - 2¹ = 136854959 is a prime.

Together with 136854959, it forms a pair of twin primes.

It is equal to p_7744489 and since 136854961 and 7744489 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (136854901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68427480 + 68427481.

It is an arithmetic number, because the mean of its divisors is an integer number (68427481).

Almost surely, 2^136854961 is an apocalyptic number.

It is an amenable number.

136854961 is a deficient number, since it is larger than the sum of its proper divisors (1).

136854961 is an equidigital number, since it uses as much as digits as its factorization.

136854961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 136854961 is about 11698.5025110054. The cubic root of 136854961 is about 515.3316881732.

The spelling of 136854961 in words is "one hundred thirty-six million, eight hundred fifty-four thousand, nine hundred sixty-one".