161677336 has 8 divisors (see below), whose sum is σ = 303145020. Its totient is φ = 80838664.

The previous prime is 161677331. The next prime is 161677343. The reversal of 161677336 is 633776161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×161677336² = 52279121952113792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161677331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10104826 + ... + 10104841.

Almost surely, 2^161677336 is an apocalyptic number.

It is an amenable number.

161677336 is a deficient number, since it is larger than the sum of its proper divisors (141467684).

161677336 is a wasteful number, since it uses less digits than its factorization.

161677336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20209673 (or 20209669 counting only the distinct ones).

The product of its digits is 95256, while the sum is 40.

The square root of 161677336 is about 12715.2403044535. The cubic root of 161677336 is about 544.7740117397.

The spelling of 161677336 in words is "one hundred sixty-one million, six hundred seventy-seven thousand, three hundred thirty-six".