148649 has 6 divisors (see below), whose sum is σ = 155946. Its totient is φ = 141680.

The previous prime is 148639. The next prime is 148663. The reversal of 148649 is 946841.

148649 = T₁₀₂ + T₁₀₃ + ... + T₁₂₄.

It can be written as a sum of positive squares in only one way, i.e., 135424 + 13225 = 368^2 + 115^2 .

It is not a de Polignac number, because 148649 - 2⁴ = 148633 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 148649.

It is not an unprimeable number, because it can be changed into a prime (148609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389 + ... + 669.

It is an arithmetic number, because the mean of its divisors is an integer number (25991).

2¹⁴⁸⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

148649 is a deficient number, since it is larger than the sum of its proper divisors (7297).

148649 is an equidigital number, since it uses as much as digits as its factorization.

148649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 304 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 148649 is about 385.5502561275. The cubic root of 148649 is about 52.9729302847.

It can be divided in two parts, 148 and 649, that added together give a palindrome (797).

The spelling of 148649 in words is "one hundred forty-eight thousand, six hundred forty-nine".