148977685 has 4 divisors (see below), whose sum is σ = 178773228. Its totient is φ = 119182144.

The previous prime is 148977679. The next prime is 148977691. The reversal of 148977685 is 586779841.

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

It is an interprime number because it is at equal distance from previous prime (148977679) and next prime (148977691).

It can be written as a sum of positive squares in 2 ways, for example, as 77845329 + 71132356 = 8823^2 + 8434^2 .

It is a cyclic number.

It is not a de Polignac number, because 148977685 - 2¹³ = 148969493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14897764 + ... + 14897773.

It is an arithmetic number, because the mean of its divisors is an integer number (44693307).

Almost surely, 2^148977685 is an apocalyptic number.

It is an amenable number.

148977685 is a deficient number, since it is larger than the sum of its proper divisors (29795543).

148977685 is an equidigital number, since it uses as much as digits as its factorization.

148977685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29795542.

The product of its digits is 3386880, while the sum is 55.

The square root of 148977685 is about 12205.6415234923. The cubic root of 148977685 is about 530.1194521311.

The spelling of 148977685 in words is "one hundred forty-eight million, nine hundred seventy-seven thousand, six hundred eighty-five".