154065613 has 4 divisors (see below), whose sum is σ = 165916828. Its totient is φ = 142214400.

The previous prime is 154065599. The next prime is 154065617. The reversal of 154065613 is 316560451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15697444 + 138368169 = 3962^2 + 11763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154065613 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 (154065617) 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, 5925588 + ... + 5925613.

It is an arithmetic number, because the mean of its divisors is an integer number (41479207).

Almost surely, 2^154065613 is an apocalyptic number.

154065613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

154065613 is a deficient number, since it is larger than the sum of its proper divisors (11851215).

154065613 is a wasteful number, since it uses less digits than its factorization.

154065613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11851214.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 154065613 is about 12412.3169875733. The cubic root of 154065613 is about 536.0869542692.

The spelling of 154065613 in words is "one hundred fifty-four million, sixty-five thousand, six hundred thirteen".