672158087 has 4 divisors (see below), whose sum is σ = 711696816. Its totient is φ = 632619360.

The previous prime is 672158063. The next prime is 672158107. The reversal of 672158087 is 780851276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672158087 - 2⁶ = 672158023 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 (672158017) 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, 19769339 + ... + 19769372.

It is an arithmetic number, because the mean of its divisors is an integer number (177924204).

Almost surely, 2^672158087 is an apocalyptic number.

672158087 is a deficient number, since it is larger than the sum of its proper divisors (39538729).

672158087 is a wasteful number, since it uses less digits than its factorization.

672158087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39538728.

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 672158087 is about 25926.0117835351. The cubic root of 672158087 is about 875.9725076163.

The spelling of 672158087 in words is "six hundred seventy-two million, one hundred fifty-eight thousand, eighty-seven".