1964636 has 6 divisors (see below), whose sum is σ = 3438120. Its totient is φ = 982316.

The previous prime is 1964629. The next prime is 1964659. The reversal of 1964636 is 6364691.

It is a super-2 number, since 2×1964636² = 7719589224992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1964596 and 1964605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245576 + ... + 245583.

It is an arithmetic number, because the mean of its divisors is an integer number (573020).

2^1964636 is an apocalyptic number.

It is an amenable number.

1964636 is a deficient number, since it is larger than the sum of its proper divisors (1473484).

1964636 is a wasteful number, since it uses less digits than its factorization.

1964636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491163 (or 491161 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The square root of 1964636 is about 1401.6547363741. The cubic root of 1964636 is about 125.2450871443.

The spelling of 1964636 in words is "one million, nine hundred sixty-four thousand, six hundred thirty-six".