65979541 has 8 divisors (see below), whose sum is σ = 67406904. Its totient is φ = 64559040.

The previous prime is 65979539. The next prime is 65979569. The reversal of 65979541 is 14597956.

It can be written as a sum of positive squares in 4 ways, for example, as 28900 + 65950641 = 170^2 + 8121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65979541 - 2¹ = 65979539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65979491 and 65979500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65979521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20835 + ... + 23791.

It is an arithmetic number, because the mean of its divisors is an integer number (8425863).

Almost surely, 2^65979541 is an apocalyptic number.

It is an amenable number.

65979541 is a deficient number, since it is larger than the sum of its proper divisors (1427363).

65979541 is a wasteful number, since it uses less digits than its factorization.

65979541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3431.

The product of its digits is 340200, while the sum is 46.

The square root of 65979541 is about 8122.7791426334. The cubic root of 65979541 is about 404.0822403076.

It can be divided in two parts, 659 and 79541, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 65979541 in words is "sixty-five million, nine hundred seventy-nine thousand, five hundred forty-one".