148863661 has 4 divisors (see below), whose sum is σ = 152494524. Its totient is φ = 145232800.

The previous prime is 148863653. The next prime is 148863703. The reversal of 148863661 is 166368841.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 71318025 + 77545636 = 8445^2 + 8806^2 .

It is a cyclic number.

It is not a de Polignac number, because 148863661 - 2³ = 148863653 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 (148863361) 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, 1815370 + ... + 1815451.

It is an arithmetic number, because the mean of its divisors is an integer number (38123631).

Almost surely, 2^148863661 is an apocalyptic number.

It is an amenable number.

148863661 is a deficient number, since it is larger than the sum of its proper divisors (3630863).

148863661 is an equidigital number, since it uses as much as digits as its factorization.

148863661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630862.

The product of its digits is 165888, while the sum is 43.

The square root of 148863661 is about 12200.9696745791. The cubic root of 148863661 is about 529.9841706439.

The spelling of 148863661 in words is "one hundred forty-eight million, eight hundred sixty-three thousand, six hundred sixty-one".