69960661 has 4 divisors (see below), whose sum is σ = 74076012. Its totient is φ = 65845312.

The previous prime is 69960659. The next prime is 69960691. The reversal of 69960661 is 16606996.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39765636 + 30195025 = 6306^2 + 5495^2 .

It is a cyclic number.

It is not a de Polignac number, because 69960661 - 2¹ = 69960659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69960601) 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 3 ways as a sum of consecutive naturals, for example, 2057650 + ... + 2057683.

It is an arithmetic number, because the mean of its divisors is an integer number (18519003).

Almost surely, 2^69960661 is an apocalyptic number.

It is an amenable number.

69960661 is a deficient number, since it is larger than the sum of its proper divisors (4115351).

69960661 is a wasteful number, since it uses less digits than its factorization.

69960661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115350.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 69960661 is about 8364.2489800340. The cubic root of 69960661 is about 412.0513120652.

The spelling of 69960661 in words is "sixty-nine million, nine hundred sixty thousand, six hundred sixty-one".