154340987 has 8 divisors (see below), whose sum is σ = 159801600. Its totient is φ = 148889664.

The previous prime is 154340983. The next prime is 154341107. The reversal of 154340987 is 789043451.

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 154340987 - 2² = 154340983 is a prime.

It is a super-2 number, since 2×154340987² = 47642280536268338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154340981) 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, 63743 + ... + 66119.

It is an arithmetic number, because the mean of its divisors is an integer number (19975200).

Almost surely, 2^154340987 is an apocalyptic number.

154340987 is a deficient number, since it is larger than the sum of its proper divisors (5460613).

154340987 is a wasteful number, since it uses less digits than its factorization.

154340987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 154340987 is about 12423.4048070567. The cubic root of 154340987 is about 536.4061614338.

The spelling of 154340987 in words is "one hundred fifty-four million, three hundred forty thousand, nine hundred eighty-seven".