167447661 has 8 divisors (see below), whose sum is σ = 223357824. Its totient is φ = 111584640.

The previous prime is 167447641. The next prime is 167447663. The reversal of 167447661 is 166744761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 167447661 - 2¹⁰ = 167446637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167447663) 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, 2436 + ... + 18461.

It is an arithmetic number, because the mean of its divisors is an integer number (27919728).

Almost surely, 2^167447661 is an apocalyptic number.

It is an amenable number.

167447661 is a deficient number, since it is larger than the sum of its proper divisors (55910163).

167447661 is a wasteful number, since it uses less digits than its factorization.

167447661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23571.

The product of its digits is 169344, while the sum is 42.

The square root of 167447661 is about 12940.1569155865. The cubic root of 167447661 is about 551.1794644454.

The spelling of 167447661 in words is "one hundred sixty-seven million, four hundred forty-seven thousand, six hundred sixty-one".