1627163661 has 8 divisors (see below), whose sum is σ = 2170163584. Its totient is φ = 1084469760.

The previous prime is 1627163633. The next prime is 1627163669. The reversal of 1627163661 is 1663617261.

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

It is not a de Polignac number, because 1627163661 - 2⁷ = 1627163533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1627163669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63796 + ... + 85581.

It is an arithmetic number, because the mean of its divisors is an integer number (271270448).

Almost surely, 2^1627163661 is an apocalyptic number.

It is an amenable number.

1627163661 is a deficient number, since it is larger than the sum of its proper divisors (542999923).

1627163661 is a wasteful number, since it uses less digits than its factorization.

1627163661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153011.

The product of its digits is 54432, while the sum is 39.

The square root of 1627163661 is about 40338.1167259950. The cubic root of 1627163661 is about 1176.1889064101.

The spelling of 1627163661 in words is "one billion, six hundred twenty-seven million, one hundred sixty-three thousand, six hundred sixty-one".