168672037 has 4 divisors (see below), whose sum is σ = 168749676. Its totient is φ = 168594400.

The previous prime is 168672029. The next prime is 168672067. The reversal of 168672037 is 730276861.

168672037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 730276861 = 179 ⋅4079759.

It can be written as a sum of positive squares in 2 ways, for example, as 98128836 + 70543201 = 9906^2 + 8399^2 .

It is a cyclic number.

It is not a de Polignac number, because 168672037 - 2³ = 168672029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168672017) 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, 35464 + ... + 39937.

It is an arithmetic number, because the mean of its divisors is an integer number (42187419).

Almost surely, 2^168672037 is an apocalyptic number.

It is an amenable number.

168672037 is a deficient number, since it is larger than the sum of its proper divisors (77639).

168672037 is an equidigital number, since it uses as much as digits as its factorization.

168672037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77638.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 168672037 is about 12987.3799128231. The cubic root of 168672037 is about 552.5196100136.

The spelling of 168672037 in words is "one hundred sixty-eight million, six hundred seventy-two thousand, thirty-seven".