154614661 has 2 divisors, whose sum is σ = 154614662. Its totient is φ = 154614660.

The previous prime is 154614659. The next prime is 154614673. The reversal of 154614661 is 166416451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107952100 + 46662561 = 10390^2 + 6831^2 .

It is a cyclic number.

It is not a de Polignac number, because 154614661 - 2¹ = 154614659 is a prime.

It is a super-2 number, since 2×154614661² = 47811386792289842, which contains 22 as substring.

Together with 154614659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154614611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77307330 + 77307331.

It is an arithmetic number, because the mean of its divisors is an integer number (77307331).

Almost surely, 2^154614661 is an apocalyptic number.

It is an amenable number.

154614661 is a deficient number, since it is larger than the sum of its proper divisors (1).

154614661 is an equidigital number, since it uses as much as digits as its factorization.

154614661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 154614661 is about 12434.4143810635. The cubic root of 154614661 is about 536.7230220429.

The spelling of 154614661 in words is "one hundred fifty-four million, six hundred fourteen thousand, six hundred sixty-one".