102665944 has 8 divisors (see below), whose sum is σ = 192498660. Its totient is φ = 51332968.

The previous prime is 102665933. The next prime is 102665947. The reversal of 102665944 is 449566201.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×102665944² = 21080592114822272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102665947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6416614 + ... + 6416629.

Almost surely, 2^102665944 is an apocalyptic number.

It is an amenable number.

102665944 is a deficient number, since it is larger than the sum of its proper divisors (89832716).

102665944 is a wasteful number, since it uses less digits than its factorization.

102665944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12833249 (or 12833245 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 102665944 is about 10132.4204413358. The cubic root of 102665944 is about 468.2475010050.

The spelling of 102665944 in words is "one hundred two million, six hundred sixty-five thousand, nine hundred forty-four".