3698978 has 8 divisors (see below), whose sum is σ = 5615568. Its totient is φ = 1827124.

The previous prime is 3698969. The next prime is 3698999. The reversal of 3698978 is 8798963.

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

It is a d-powerful number, because it can be written as 3¹³ + 6 + 9² + 8³ + 9⁴ + 7³ + 8⁷ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10976 + ... + 11307.

It is an arithmetic number, because the mean of its divisors is an integer number (701946).

Almost surely, 2^3698978 is an apocalyptic number.

3698978 is a deficient number, since it is larger than the sum of its proper divisors (1916590).

3698978 is a wasteful number, since it uses less digits than its factorization.

3698978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22368.

The product of its digits is 653184, while the sum is 50.

The square root of 3698978 is about 1923.2727315698. The cubic root of 3698978 is about 154.6537954592.

The spelling of 3698978 in words is "three million, six hundred ninety-eight thousand, nine hundred seventy-eight".