102660449 has 8 divisors (see below), whose sum is σ = 103700520. Its totient is φ = 101625856.

The previous prime is 102660427. The next prime is 102660463. The reversal of 102660449 is 944066201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 85229824 + 17430625 = 9232^2 + 4175^2 .

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 102660449 - 2¹⁶ = 102594913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102662449) 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, 43307 + ... + 45615.

It is an arithmetic number, because the mean of its divisors is an integer number (12962565).

Almost surely, 2^102660449 is an apocalyptic number.

It is an amenable number.

102660449 is a deficient number, since it is larger than the sum of its proper divisors (1040071).

102660449 is a wasteful number, since it uses less digits than its factorization.

102660449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 102660449 is about 10132.1492784108. The cubic root of 102660449 is about 468.2391468361.

The spelling of 102660449 in words is "one hundred two million, six hundred sixty thousand, four hundred forty-nine".