2653678 has 4 divisors (see below), whose sum is σ = 3980520. Its totient is φ = 1326838.

The previous prime is 2653633. The next prime is 2653681. The reversal of 2653678 is 8763562.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663418 + ... + 663421.

It is an arithmetic number, because the mean of its divisors is an integer number (995130).

2^2653678 is an apocalyptic number.

2653678 is a deficient number, since it is larger than the sum of its proper divisors (1326842).

2653678 is a wasteful number, since it uses less digits than its factorization.

2653678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326841.

The product of its digits is 60480, while the sum is 37.

The square root of 2653678 is about 1629.0113566209. The cubic root of 2653678 is about 138.4467423727.

Subtracting from 2653678 its sum of digits (37), we obtain a square (2653641 = 1629²).

The spelling of 2653678 in words is "two million, six hundred fifty-three thousand, six hundred seventy-eight".