147681669 has 16 divisors (see below), whose sum is σ = 209224512. Its totient is φ = 92337408.

The previous prime is 147681649. The next prime is 147681673. The reversal of 147681669 is 966186741.

It is a happy number.

It is not a de Polignac number, because 147681669 - 2¹¹ = 147679621 is a prime.

It is a super-2 number, since 2×147681669² = 43619750717251122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147681649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10002 + ... + 19884.

It is an arithmetic number, because the mean of its divisors is an integer number (13076532).

Almost surely, 2^147681669 is an apocalyptic number.

It is an amenable number.

147681669 is a deficient number, since it is larger than the sum of its proper divisors (61542843).

147681669 is a wasteful number, since it uses less digits than its factorization.

147681669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196.

The product of its digits is 435456, while the sum is 48.

The square root of 147681669 is about 12152.4346943318. The cubic root of 147681669 is about 528.5777329486.

The spelling of 147681669 in words is "one hundred forty-seven million, six hundred eighty-one thousand, six hundred sixty-nine".