1621266 has 32 divisors (see below), whose sum is σ = 3410880. Its totient is φ = 513216.

The previous prime is 1621259. The next prime is 1621283. The reversal of 1621266 is 6621261.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14820 + ... + 14928.

It is an arithmetic number, because the mean of its divisors is an integer number (106590).

2^1621266 is an apocalyptic number.

1621266 is an abundant number, since it is smaller than the sum of its proper divisors (1789614).

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

1621266 is a wasteful number, since it uses less digits than its factorization.

1621266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218.

The product of its digits is 864, while the sum is 24.

The square root of 1621266 is about 1273.2894407793. The cubic root of 1621266 is about 117.4766152346.

The spelling of 1621266 in words is "one million, six hundred twenty-one thousand, two hundred sixty-six".