161677076 has 24 divisors (see below), whose sum is σ = 315837984. Its totient is φ = 71779680.

The previous prime is 161677073. The next prime is 161677093. The reversal of 161677076 is 670776161.

It is a super-2 number, since 2×161677076² = 52278953807819552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161677073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40835 + ... + 44618.

It is an arithmetic number, because the mean of its divisors is an integer number (13159916).

Almost surely, 2^161677076 is an apocalyptic number.

It is an amenable number.

161677076 is a deficient number, since it is larger than the sum of its proper divisors (154160908).

161677076 is a wasteful number, since it uses less digits than its factorization.

161677076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85511 (or 85509 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 161677076 is about 12715.2300804980. The cubic root of 161677076 is about 544.7737197150.

The spelling of 161677076 in words is "one hundred sixty-one million, six hundred seventy-seven thousand, seventy-six".