29628661 has 2 divisors, whose sum is σ = 29628662. Its totient is φ = 29628660.

The previous prime is 29628649. The next prime is 29628667. The reversal of 29628661 is 16682692.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28998225 + 630436 = 5385^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 29628661 - 2⁹ = 29628149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29628667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14814330 + 14814331.

It is an arithmetic number, because the mean of its divisors is an integer number (14814331).

Almost surely, 2^29628661 is an apocalyptic number.

It is an amenable number.

29628661 is a deficient number, since it is larger than the sum of its proper divisors (1).

29628661 is an equidigital number, since it uses as much as digits as its factorization.

29628661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 29628661 is about 5443.2215644782. The cubic root of 29628661 is about 309.4358835521.

The spelling of 29628661 in words is "twenty-nine million, six hundred twenty-eight thousand, six hundred sixty-one".