134602661 has 4 divisors (see below), whose sum is σ = 136809324. Its totient is φ = 132396000.

The previous prime is 134602627. The next prime is 134602679. The reversal of 134602661 is 166206431.

It is a happy number.

134602661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166206431 = 67 ⋅2480693.

It can be written as a sum of positive squares in 2 ways, for example, as 63520900 + 71081761 = 7970^2 + 8431^2 .

It is a cyclic number.

It is not a de Polignac number, because 134602661 - 2¹⁰ = 134601637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134602681) 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, 1103240 + ... + 1103361.

It is an arithmetic number, because the mean of its divisors is an integer number (34202331).

Almost surely, 2^134602661 is an apocalyptic number.

134602661 is the 5189-th centered decagonal number.

It is an amenable number.

134602661 is a deficient number, since it is larger than the sum of its proper divisors (2206663).

134602661 is an equidigital number, since it uses as much as digits as its factorization.

134602661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206662.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 134602661 is about 11601.8386904835. The cubic root of 134602661 is about 512.4890004381.

The spelling of 134602661 in words is "one hundred thirty-four million, six hundred two thousand, six hundred sixty-one".