11965620 has 48 divisors (see below), whose sum is σ = 35477568. Its totient is φ = 3002880.

The previous prime is 11965619. The next prime is 11965621. The reversal of 11965620 is 2656911.

11965620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11965619) and next prime (11965621).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11965621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4846 + ... + 6885.

It is an arithmetic number, because the mean of its divisors is an integer number (739116).

Almost surely, 2^11965620 is an apocalyptic number.

11965620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11965620 is an abundant number, since it is smaller than the sum of its proper divisors (23511948).

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

11965620 is a wasteful number, since it uses less digits than its factorization.

11965620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11760 (or 11758 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 11965620 is about 3459.1357302078. The cubic root of 11965620 is about 228.7239989558.

The spelling of 11965620 in words is "eleven million, nine hundred sixty-five thousand, six hundred twenty".