3698878 has 4 divisors (see below), whose sum is σ = 5548320. Its totient is φ = 1849438.

The previous prime is 3698873. The next prime is 3698881. The reversal of 3698878 is 8788963.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8788963 = 19 ⋅462577.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3698873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 924718 + ... + 924721.

It is an arithmetic number, because the mean of its divisors is an integer number (1387080).

Almost surely, 2^3698878 is an apocalyptic number.

3698878 is a deficient number, since it is larger than the sum of its proper divisors (1849442).

3698878 is a wasteful number, since it uses less digits than its factorization.

3698878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849441.

The product of its digits is 580608, while the sum is 49.

The square root of 3698878 is about 1923.2467340412. The cubic root of 3698878 is about 154.6524017842.

The spelling of 3698878 in words is "three million, six hundred ninety-eight thousand, eight hundred seventy-eight".