148689287 has 4 divisors (see below), whose sum is σ = 148758456. Its totient is φ = 148620120.

The previous prime is 148689283. The next prime is 148689301. The reversal of 148689287 is 782986841.

It is a happy number.

148689287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 148689287 - 2² = 148689283 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 (148689283) 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, 31253 + ... + 35694.

It is an arithmetic number, because the mean of its divisors is an integer number (37189614).

Almost surely, 2^148689287 is an apocalyptic number.

148689287 is a deficient number, since it is larger than the sum of its proper divisors (69169).

148689287 is an equidigital number, since it uses as much as digits as its factorization.

148689287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69168.

The product of its digits is 1548288, while the sum is 53.

The square root of 148689287 is about 12193.8216732901. The cubic root of 148689287 is about 529.7771544458. Note that the first 3 decimals are identical.

The spelling of 148689287 in words is "one hundred forty-eight million, six hundred eighty-nine thousand, two hundred eighty-seven".