1642996 has 6 divisors (see below), whose sum is σ = 2875250. Its totient is φ = 821496.

The previous prime is 1642951. The next prime is 1642997. The reversal of 1642996 is 6992461.

It can be written as a sum of positive squares in only one way, i.e., 1299600 + 343396 = 1140^2 + 586^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205371 + ... + 205378.

2^1642996 is an apocalyptic number.

It is an amenable number.

1642996 is a deficient number, since it is larger than the sum of its proper divisors (1232254).

1642996 is a wasteful number, since it uses less digits than its factorization.

1642996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410753 (or 410751 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 1642996 is about 1281.7940552210. The cubic root of 1642996 is about 117.9991381724. Note that the first 3 decimals are identical.

It can be divided in two parts, 164 and 2996, that added together give a triangular number (3160 = T₇₉).

The spelling of 1642996 in words is "one million, six hundred forty-two thousand, nine hundred ninety-six".