29691601 has 3 divisors (see below), whose sum is σ = 29697051. Its totient is φ = 29686152.

The previous prime is 29691593. The next prime is 29691611. The reversal of 29691601 is 10619692.

The square root of 29691601 is 5449.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 3066001 + 26625600 = 1751^2 + 5160^2 .

It is not a de Polignac number, because 29691601 - 2³ = 29691593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29691611) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2725 + ... + 8173.

It is an arithmetic number, because the mean of its divisors is an integer number (9899017).

Almost surely, 2^29691601 is an apocalyptic number.

29691601 is the 5449-th square number.

29691601 is the 2725-th centered octagonal number.

It is an amenable number.

29691601 is a deficient number, since it is larger than the sum of its proper divisors (5450).

29691601 is an frugal number, since it uses more digits than its factorization.

29691601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10898 (or 5449 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The cubic root of 29691601 is about 309.6548395591.

The spelling of 29691601 in words is "twenty-nine million, six hundred ninety-one thousand, six hundred one".