60691669 has 4 divisors (see below), whose sum is σ = 60707340. Its totient is φ = 60676000.

The previous prime is 60691661. The next prime is 60691739. The reversal of 60691669 is 96619606.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96619606 = 2 ⋅48309803.

It can be written as a sum of positive squares in 2 ways, for example, as 26316900 + 34374769 = 5130^2 + 5863^2 .

It is a cyclic number.

It is not a de Polignac number, because 60691669 - 2³ = 60691661 is a prime.

It is a super-2 number, since 2×60691669² = 7366957372011122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60691661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2667 + ... + 11335.

It is an arithmetic number, because the mean of its divisors is an integer number (15176835).

Almost surely, 2^60691669 is an apocalyptic number.

It is an amenable number.

60691669 is a deficient number, since it is larger than the sum of its proper divisors (15671).

60691669 is an equidigital number, since it uses as much as digits as its factorization.

60691669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15670.

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

The square root of 60691669 is about 7790.4857999999. The cubic root of 60691669 is about 392.9853495263.

The spelling of 60691669 in words is "sixty million, six hundred ninety-one thousand, six hundred sixty-nine".