162623987 has 4 divisors (see below), whose sum is σ = 165290016. Its totient is φ = 159957960.

The previous prime is 162623963. The next prime is 162624013. The reversal of 162623987 is 789326261.

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

It is a cyclic number.

It is not a de Polignac number, because 162623987 - 2¹⁰ = 162622963 is a prime.

It is a super-2 number, since 2×162623987² = 52893122295552338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162683987) 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, 1332923 + ... + 1333044.

It is an arithmetic number, because the mean of its divisors is an integer number (41322504).

Almost surely, 2^162623987 is an apocalyptic number.

162623987 is a deficient number, since it is larger than the sum of its proper divisors (2666029).

162623987 is an equidigital number, since it uses as much as digits as its factorization.

162623987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666028.

The product of its digits is 217728, while the sum is 44.

The square root of 162623987 is about 12752.4110269392. The cubic root of 162623987 is about 545.8351944824.

The spelling of 162623987 in words is "one hundred sixty-two million, six hundred twenty-three thousand, nine hundred eighty-seven".