69672961 has 4 divisors (see below), whose sum is σ = 71556052. Its totient is φ = 67789872.

The previous prime is 69672959. The next prime is 69672971. The reversal of 69672961 is 16927696.

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 61152400 + 8520561 = 7820^2 + 2919^2 .

It is a cyclic number.

It is not a de Polignac number, because 69672961 - 2¹ = 69672959 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69672971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941490 + ... + 941563.

It is an arithmetic number, because the mean of its divisors is an integer number (17889013).

Almost surely, 2^69672961 is an apocalyptic number.

It is an amenable number.

69672961 is a deficient number, since it is larger than the sum of its proper divisors (1883091).

69672961 is a wasteful number, since it uses less digits than its factorization.

69672961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883090.

The product of its digits is 244944, while the sum is 46.

The square root of 69672961 is about 8347.0330657066. The cubic root of 69672961 is about 411.4857083197.

It can be divided in two parts, 696729 and 61, that added together give a triangular number (696790 = T₁₁₈₀).

The spelling of 69672961 in words is "sixty-nine million, six hundred seventy-two thousand, nine hundred sixty-one".