144736669 has 16 divisors (see below), whose sum is σ = 181762560. Its totient is φ = 111962160.

The previous prime is 144736643. The next prime is 144736673. The reversal of 144736669 is 966637441.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 144736669 - 2¹⁷ = 144605597 is a prime.

It is a super-2 number, since 2×144736669² = 41897406706431122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144736619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3942 + ... + 17464.

It is an arithmetic number, because the mean of its divisors is an integer number (11360160).

Almost surely, 2^144736669 is an apocalyptic number.

It is an amenable number.

144736669 is a deficient number, since it is larger than the sum of its proper divisors (37025891).

144736669 is a wasteful number, since it uses less digits than its factorization.

144736669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13680.

The product of its digits is 653184, while the sum is 46.

The square root of 144736669 is about 12030.6553853063. The cubic root of 144736669 is about 525.0405640615.

The spelling of 144736669 in words is "one hundred forty-four million, seven hundred thirty-six thousand, six hundred sixty-nine".