144970691 has 2 divisors, whose sum is σ = 144970692. Its totient is φ = 144970690.

The previous prime is 144970687. The next prime is 144970717. The reversal of 144970691 is 196079441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144970691 - 2² = 144970687 is a prime.

It is not a weakly prime, because it can be changed into another prime (144970591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72485345 + 72485346.

It is an arithmetic number, because the mean of its divisors is an integer number (72485346).

Almost surely, 2^144970691 is an apocalyptic number.

144970691 is a deficient number, since it is larger than the sum of its proper divisors (1).

144970691 is an equidigital number, since it uses as much as digits as its factorization.

144970691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 144970691 is about 12040.3775273037. The cubic root of 144970691 is about 525.3233877590.

The spelling of 144970691 in words is "one hundred forty-four million, nine hundred seventy thousand, six hundred ninety-one".