1661084506 has 8 divisors (see below), whose sum is σ = 2492273664. Its totient is φ = 830326620.

The previous prime is 1661084483. The next prime is 1661084521. The reversal of 1661084506 is 6054801661.

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

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, 98010 + ... + 113701.

It is an arithmetic number, because the mean of its divisors is an integer number (311534208).

Almost surely, 2^1661084506 is an apocalyptic number.

1661084506 is a deficient number, since it is larger than the sum of its proper divisors (831189158).

1661084506 is a wasteful number, since it uses less digits than its factorization.

1661084506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215636.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1661084506 is about 40756.4044783148. The cubic root of 1661084506 is about 1184.3059442856.

The spelling of 1661084506 in words is "one billion, six hundred sixty-one million, eighty-four thousand, five hundred six".