1961608 has 16 divisors (see below), whose sum is σ = 4012560. Its totient is φ = 891600.

The previous prime is 1961593. The next prime is 1961623. The reversal of 1961608 is 8061691.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1961593) and next prime (1961623).

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 1961608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11058 + ... + 11233.

It is an arithmetic number, because the mean of its divisors is an integer number (250785).

2^1961608 is an apocalyptic number.

It is an amenable number.

1961608 is an abundant number, since it is smaller than the sum of its proper divisors (2050952).

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

1961608 is a wasteful number, since it uses less digits than its factorization.

1961608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22308 (or 22304 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1961608 is about 1400.5741679754. The cubic root of 1961608 is about 125.1807092940.

The spelling of 1961608 in words is "one million, nine hundred sixty-one thousand, six hundred eight".