1201684 has 24 divisors (see below), whose sum is σ = 2370816. Its totient is φ = 528000.

The previous prime is 1201643. The next prime is 1201687. The reversal of 1201684 is 4861021.

1201684 = T₁₁₂ + T₁₁₃ + ... + T₂₀₄.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924 + ... + 1804.

It is an arithmetic number, because the mean of its divisors is an integer number (98784).

2^1201684 is an apocalyptic number.

It is an amenable number.

1201684 is a deficient number, since it is larger than the sum of its proper divisors (1169132).

1201684 is a wasteful number, since it uses less digits than its factorization.

1201684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1201684 is about 1096.2134828582. The cubic root of 1201684 is about 106.3155424901.

It can be divided in two parts, 12016 and 84, that added together give a square (12100 = 110²).

The spelling of 1201684 in words is "one million, two hundred one thousand, six hundred eighty-four".