3669978 has 16 divisors (see below), whose sum is σ = 7904736. Its totient is φ = 1129200.

The previous prime is 3669961. The next prime is 3670001. The reversal of 3669978 is 8799663.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23448 + ... + 23603.

It is an arithmetic number, because the mean of its divisors is an integer number (494046).

Almost surely, 2^3669978 is an apocalyptic number.

3669978 is an abundant number, since it is smaller than the sum of its proper divisors (4234758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3669978 is a wasteful number, since it uses less digits than its factorization.

3669978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47069.

The product of its digits is 489888, while the sum is 48.

The square root of 3669978 is about 1915.7186641049. The cubic root of 3669978 is about 154.2485725311.

The spelling of 3669978 in words is "three million, six hundred sixty-nine thousand, nine hundred seventy-eight".