3980655 has 24 divisors (see below), whose sum is σ = 7886112. Its totient is φ = 1819584.

The previous prime is 3980653. The next prime is 3980657. The reversal of 3980655 is 5560893.

It is an interprime number because it is at equal distance from previous prime (3980653) and next prime (3980657).

It is not a de Polignac number, because 3980655 - 2¹ = 3980653 is a prime.

It is a super-2 number, since 2×3980655² = 31691228458050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3980653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6004 + ... + 6633.

It is an arithmetic number, because the mean of its divisors is an integer number (328588).

Almost surely, 2^3980655 is an apocalyptic number.

3980655 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3980655 is a deficient number, since it is larger than the sum of its proper divisors (3905457).

3980655 is a wasteful number, since it uses less digits than its factorization.

3980655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12655 (or 12652 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 3980655 is about 1995.1578884890. The cubic root of 3980655 is about 158.4837892711.

The spelling of 3980655 in words is "three million, nine hundred eighty thousand, six hundred fifty-five".