5661642590 has 8 divisors (see below), whose sum is σ = 10190956680. Its totient is φ = 2264657032.

The previous prime is 5661642557. The next prime is 5661642619. The reversal of 5661642590 is 952461665.

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

It is a congruent number.

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, 283082120 + ... + 283082139.

It is an arithmetic number, because the mean of its divisors is an integer number (1273869585).

Almost surely, 2^5661642590 is an apocalyptic number.

5661642590 is a deficient number, since it is larger than the sum of its proper divisors (4529314090).

5661642590 is a wasteful number, since it uses less digits than its factorization.

5661642590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566164266.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 5661642590 is about 75243.8873929305. The cubic root of 5661642590 is about 1782.3000387452.

The spelling of 5661642590 in words is "five billion, six hundred sixty-one million, six hundred forty-two thousand, five hundred ninety".