148807661 has 2 divisors, whose sum is σ = 148807662. Its totient is φ = 148807660.

The previous prime is 148807597. The next prime is 148807663. The reversal of 148807661 is 166708841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93973636 + 54834025 = 9694^2 + 7405^2 .

It is a cyclic number.

It is not a de Polignac number, because 148807661 - 2⁶ = 148807597 is a prime.

Together with 148807663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148807663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74403830 + 74403831.

It is an arithmetic number, because the mean of its divisors is an integer number (74403831).

Almost surely, 2^148807661 is an apocalyptic number.

It is an amenable number.

148807661 is a deficient number, since it is larger than the sum of its proper divisors (1).

148807661 is an equidigital number, since it uses as much as digits as its factorization.

148807661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 148807661 is about 12198.6745591478. The cubic root of 148807661 is about 529.9177052716.

The spelling of 148807661 in words is "one hundred forty-eight million, eight hundred seven thousand, six hundred sixty-one".