1661601710 has 8 divisors (see below), whose sum is σ = 2990883096. Its totient is φ = 664640680.

The previous prime is 1661601701. The next prime is 1661601727. The reversal of 1661601710 is 171061661.

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

It is a Curzon number.

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, 83080076 + ... + 83080095.

It is an arithmetic number, because the mean of its divisors is an integer number (373860387).

Almost surely, 2^1661601710 is an apocalyptic number.

1661601710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661601710 is a deficient number, since it is larger than the sum of its proper divisors (1329281386).

1661601710 is a wasteful number, since it uses less digits than its factorization.

1661601710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166160178.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1661601710 is about 40762.7490486105. The cubic root of 1661601710 is about 1184.4288487710.

The spelling of 1661601710 in words is "one billion, six hundred sixty-one million, six hundred one thousand, seven hundred ten".