3667998 has 8 divisors (see below), whose sum is σ = 7336008. Its totient is φ = 1222664.

The previous prime is 3667997. The next prime is 3667999. The reversal of 3667998 is 8997663.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3667997) and next prime (3667999).

It is a sphenic number, since it is the product of 3 distinct primes.

3667998 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3667997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305661 + ... + 305672.

It is an arithmetic number, because the mean of its divisors is an integer number (917001).

Almost surely, 2^3667998 is an apocalyptic number.

3667998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3667998 is a wasteful number, since it uses less digits than its factorization.

3667998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611338.

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

The square root of 3667998 is about 1915.2018170417. The cubic root of 3667998 is about 154.2208278494.

It can be divided in two parts, 366799 and 8, that multiplied together give a palindrome (2934392).

The spelling of 3667998 in words is "three million, six hundred sixty-seven thousand, nine hundred ninety-eight".