148666997 has 2 divisors, whose sum is σ = 148666998. Its totient is φ = 148666996.

The previous prime is 148666957. The next prime is 148667003. The reversal of 148666997 is 799666841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129254161 + 19412836 = 11369^2 + 4406^2 .

It is a cyclic number.

It is not a de Polignac number, because 148666997 - 2⁶ = 148666933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148666927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74333498 + 74333499.

It is an arithmetic number, because the mean of its divisors is an integer number (74333499).

Almost surely, 2^148666997 is an apocalyptic number.

It is an amenable number.

148666997 is a deficient number, since it is larger than the sum of its proper divisors (1).

148666997 is an equidigital number, since it uses as much as digits as its factorization.

148666997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 56.

The square root of 148666997 is about 12192.9076515817. The cubic root of 148666997 is about 529.7506801715.

The spelling of 148666997 in words is "one hundred forty-eight million, six hundred sixty-six thousand, nine hundred ninety-seven".