1677657064 has 16 divisors (see below), whose sum is σ = 3168569700. Its totient is φ = 832705152.

The previous prime is 1677657061. The next prime is 1677657073. The reversal of 1677657064 is 4607567761.

It can be written as a sum of positive squares in 2 ways, for example, as 1537424100 + 140232964 = 39210^2 + 11842^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1677656999 and 1677657017.

It is not an unprimeable number, because it can be changed into a prime (1677657061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764259 + ... + 766450.

Almost surely, 2^1677657064 is an apocalyptic number.

It is an amenable number.

1677657064 is a deficient number, since it is larger than the sum of its proper divisors (1490912636).

1677657064 is a wasteful number, since it uses less digits than its factorization.

1677657064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530852 (or 1530848 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 49.

The square root of 1677657064 is about 40959.2121994552. The cubic root of 1677657064 is about 1188.2315053301.

The spelling of 1677657064 in words is "one billion, six hundred seventy-seven million, six hundred fifty-seven thousand, sixty-four".