166607047 has 4 divisors (see below), whose sum is σ = 166759200. Its totient is φ = 166454896.

The previous prime is 166607039. The next prime is 166607099. The reversal of 166607047 is 740706661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740706661 = 29 ⋅25541609.

It is a cyclic number.

It is not a de Polignac number, because 166607047 - 2³ = 166607039 is a prime.

It is a super-2 number, since 2×166607047² = 55515816220120418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166606997 and 166607015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166607017) 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, 74422 + ... + 76627.

It is an arithmetic number, because the mean of its divisors is an integer number (41689800).

Almost surely, 2^166607047 is an apocalyptic number.

166607047 is a deficient number, since it is larger than the sum of its proper divisors (152153).

166607047 is a wasteful number, since it uses less digits than its factorization.

166607047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152152.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 166607047 is about 12907.6352210620. The cubic root of 166607047 is about 550.2555803891.

The spelling of 166607047 in words is "one hundred sixty-six million, six hundred seven thousand, forty-seven".