134625621 has 32 divisors (see below), whose sum is σ = 205690240. Its totient is φ = 77635584.

The previous prime is 134625619. The next prime is 134625643. The reversal of 134625621 is 126526431.

It is not a de Polignac number, because 134625621 - 2¹ = 134625619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134625661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70941 + ... + 72813.

It is an arithmetic number, because the mean of its divisors is an integer number (6427820).

Almost surely, 2^134625621 is an apocalyptic number.

It is an amenable number.

134625621 is a deficient number, since it is larger than the sum of its proper divisors (71064619).

134625621 is a wasteful number, since it uses less digits than its factorization.

134625621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005.

The product of its digits is 8640, while the sum is 30.

The square root of 134625621 is about 11602.8281466201. The cubic root of 134625621 is about 512.5181382436.

The spelling of 134625621 in words is "one hundred thirty-four million, six hundred twenty-five thousand, six hundred twenty-one".