2164724 has 6 divisors (see below), whose sum is σ = 3788274. Its totient is φ = 1082360.

The previous prime is 2164681. The next prime is 2164739. The reversal of 2164724 is 4274612.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 33124 = 1460^2 + 182^2 .

It is a d-powerful number, because it can be written as 2³ + 1 + 6⁶ + 4 + 7⁵ + 2²¹ + 4⁶ .

It is a junction number, because it is equal to n+sod(n) for n = 2164693 and 2164702.

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, 270587 + ... + 270594.

It is an arithmetic number, because the mean of its divisors is an integer number (631379).

2^2164724 is an apocalyptic number.

It is an amenable number.

2164724 is a deficient number, since it is larger than the sum of its proper divisors (1623550).

2164724 is a wasteful number, since it uses less digits than its factorization.

2164724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541185 (or 541183 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 2164724 is about 1471.3001053490. The cubic root of 2164724 is about 129.3602493549.

The spelling of 2164724 in words is "two million, one hundred sixty-four thousand, seven hundred twenty-four".