2661506 has 8 divisors (see below), whose sum is σ = 4048704. Its totient is φ = 1311940.

The previous prime is 2661497. The next prime is 2661517. The reversal of 2661506 is 6051662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2661506² = 14167228376072, which contains 22 as substring.

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, 9230 + ... + 9513.

It is an arithmetic number, because the mean of its divisors is an integer number (506088).

2^2661506 is an apocalyptic number.

2661506 is a deficient number, since it is larger than the sum of its proper divisors (1387198).

2661506 is a wasteful number, since it uses less digits than its factorization.

2661506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18816.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 2661506 is about 1631.4122716224. The cubic root of 2661506 is about 138.5827419416.

The spelling of 2661506 in words is "two million, six hundred sixty-one thousand, five hundred six".