102690447 has 4 divisors (see below), whose sum is σ = 136920600. Its totient is φ = 68460296.

The previous prime is 102690443. The next prime is 102690449. The reversal of 102690447 is 744096201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 102690447 - 2² = 102690443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102690443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17115072 + ... + 17115077.

It is an arithmetic number, because the mean of its divisors is an integer number (34230150).

Almost surely, 2^102690447 is an apocalyptic number.

102690447 is a deficient number, since it is larger than the sum of its proper divisors (34230153).

102690447 is an equidigital number, since it uses as much as digits as its factorization.

102690447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34230152.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 102690447 is about 10133.6295077331. The cubic root of 102690447 is about 468.2847498252.

The spelling of 102690447 in words is "one hundred two million, six hundred ninety thousand, four hundred forty-seven".