4013658 has 64 divisors (see below), whose sum is σ = 10108800. Its totient is φ = 1169280.

The previous prime is 4013651. The next prime is 4013671. The reversal of 4013658 is 8563104.

4013658 is a `hidden beast` number, since 4 + 0 + 1 + 3 + 658 = 666.

It is a super-2 number, since 2×4013658² = 32218901081928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4013651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17110 + ... + 17342.

It is an arithmetic number, because the mean of its divisors is an integer number (157950).

Almost surely, 2^4013658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4013658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5054400).

4013658 is an abundant number, since it is smaller than the sum of its proper divisors (6095142).

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

4013658 is a wasteful number, since it uses less digits than its factorization.

4013658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4013658 is about 2003.4115902630. The cubic root of 4013658 is about 158.9205726468.

The spelling of 4013658 in words is "four million, thirteen thousand, six hundred fifty-eight".