102797666 has 4 divisors (see below), whose sum is σ = 154196502. Its totient is φ = 51398832.

The previous prime is 102797609. The next prime is 102797689. The reversal of 102797666 is 666797201.

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

It can be written as a sum of positive squares in only one way, i.e., 78836641 + 23961025 = 8879^2 + 4895^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25699415 + ... + 25699418.

Almost surely, 2^102797666 is an apocalyptic number.

102797666 is a deficient number, since it is larger than the sum of its proper divisors (51398836).

102797666 is an equidigital number, since it uses as much as digits as its factorization.

102797666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51398835.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 102797666 is about 10138.9183841276. The cubic root of 102797666 is about 468.4476716931.

The spelling of 102797666 in words is "one hundred two million, seven hundred ninety-seven thousand, six hundred sixty-six".