662938756628 has 6 divisors (see below), whose sum is σ = 1160142824106. Its totient is φ = 331469378312.

The previous prime is 662938756603. The next prime is 662938756637. The reversal of 662938756628 is 826657839266.

It can be written as a sum of positive squares in only one way, i.e., 654257735044 + 8681021584 = 808862^2 + 93172^2 .

It is a super-2 number, since 2×662938756628² (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 as a sum of consecutive naturals, namely, 82867344575 + ... + 82867344582.

It is an arithmetic number, because the mean of its divisors is an integer number (193357137351).

Almost surely, 2^662938756628 is an apocalyptic number.

It is an amenable number.

662938756628 is a deficient number, since it is larger than the sum of its proper divisors (497204067478).

662938756628 is a wasteful number, since it uses less digits than its factorization.

662938756628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165734689161 (or 165734689159 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 68.

The spelling of 662938756628 in words is "six hundred sixty-two billion, nine hundred thirty-eight million, seven hundred fifty-six thousand, six hundred twenty-eight".