661662462622 has 16 divisors (see below), whose sum is σ = 1193977376640. Its totient is φ = 268644909528.

The previous prime is 661662462589. The next prime is 661662462647. The reversal of 661662462622 is 226264266166.

It is a super-2 number, since 2×661662462622² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243726168 + ... + 1243726699.

It is an arithmetic number, because the mean of its divisors is an integer number (74623586040).

Almost surely, 2^661662462622 is an apocalyptic number.

661662462622 is a deficient number, since it is larger than the sum of its proper divisors (532314914018).

661662462622 is a wasteful number, since it uses less digits than its factorization.

661662462622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487452895.

The product of its digits is 2985984, while the sum is 49.

The spelling of 661662462622 in words is "six hundred sixty-one billion, six hundred sixty-two million, four hundred sixty-two thousand, six hundred twenty-two".