130661405 has 16 divisors (see below), whose sum is σ = 189734400. Its totient is φ = 84325632.

The previous prime is 130661389. The next prime is 130661411. The reversal of 130661405 is 504166031.

It is a cyclic number.

It is not a de Polignac number, because 130661405 - 2⁴ = 130661389 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109205 + ... + 110394.

It is an arithmetic number, because the mean of its divisors is an integer number (11858400).

Almost surely, 2^130661405 is an apocalyptic number.

It is an amenable number.

130661405 is a deficient number, since it is larger than the sum of its proper divisors (59072995).

130661405 is a wasteful number, since it uses less digits than its factorization.

130661405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219628.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 130661405 is about 11430.7219806975. The cubic root of 130661405 is about 507.4373627468.

The spelling of 130661405 in words is "one hundred thirty million, six hundred sixty-one thousand, four hundred five".