136520461 has 8 divisors (see below), whose sum is σ = 170207424. Its totient is φ = 106379520.

The previous prime is 136520443. The next prime is 136520507. The reversal of 136520461 is 164025631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136520461 - 2⁹ = 136519949 is a prime.

It is a super-3 number, since 3×136520461³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136520401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886420 + ... + 886573.

It is an arithmetic number, because the mean of its divisors is an integer number (21275928).

Almost surely, 2^136520461 is an apocalyptic number.

136520461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136520461 is a deficient number, since it is larger than the sum of its proper divisors (33686963).

136520461 is a wasteful number, since it uses less digits than its factorization.

136520461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773011.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 136520461 is about 11684.1970626997. The cubic root of 136520461 is about 514.9114888577.

The spelling of 136520461 in words is "one hundred thirty-six million, five hundred twenty thousand, four hundred sixty-one".