148685661 has 6 divisors (see below), whose sum is σ = 214768190. Its totient is φ = 99123768.

The previous prime is 148685651. The next prime is 148685671. The reversal of 148685661 is 166586841.

148685661 is a `hidden beast` number, since 1 + 4 + 86 + 8 + 566 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (148685651) and next prime (148685671).

It can be written as a sum of positive squares in only one way, i.e., 96412761 + 52272900 = 9819^2 + 7230^2 .

It is not a de Polignac number, because 148685661 - 2¹⁴ = 148669277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148685651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8260306 + ... + 8260323.

Almost surely, 2^148685661 is an apocalyptic number.

It is an amenable number.

148685661 is a deficient number, since it is larger than the sum of its proper divisors (66082529).

148685661 is a wasteful number, since it uses less digits than its factorization.

148685661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16520635 (or 16520632 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 148685661 is about 12193.6729905308. The cubic root of 148685661 is about 529.7728479540.

The spelling of 148685661 in words is "one hundred forty-eight million, six hundred eighty-five thousand, six hundred sixty-one".