1677344642 has 4 divisors (see below), whose sum is σ = 2516016966. Its totient is φ = 838672320.

The previous prime is 1677344629. The next prime is 1677344651. The reversal of 1677344642 is 2464437761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1361536201 + 315808441 = 36899^2 + 17771^2 .

It is a super-2 number, since 2×1677344642² = 5626970096092216328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1677344593 and 1677344602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419336159 + ... + 419336162.

Almost surely, 2^1677344642 is an apocalyptic number.

1677344642 is a deficient number, since it is larger than the sum of its proper divisors (838672324).

1677344642 is an equidigital number, since it uses as much as digits as its factorization.

1677344642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838672323.

The product of its digits is 677376, while the sum is 44.

The square root of 1677344642 is about 40955.3982034115. The cubic root of 1677344642 is about 1188.1577412064.

The spelling of 1677344642 in words is "one billion, six hundred seventy-seven million, three hundred forty-four thousand, six hundred forty-two".