197423507 has 8 divisors (see below), whose sum is σ = 199180800. Its totient is φ = 195671304.

The previous prime is 197423491. The next prime is 197423519. The reversal of 197423507 is 705324791.

197423507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 197423507 - 2⁴ = 197423491 is a prime.

It is a super-2 number, since 2×197423507² = 77952082232358098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197423557) 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, 143738 + ... + 145104.

It is an arithmetic number, because the mean of its divisors is an integer number (24897600).

Almost surely, 2^197423507 is an apocalyptic number.

197423507 is a deficient number, since it is larger than the sum of its proper divisors (1757293).

197423507 is a wasteful number, since it uses less digits than its factorization.

197423507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 197423507 is about 14050.7475601834. The cubic root of 197423507 is about 582.2814490763.

The spelling of 197423507 in words is "one hundred ninety-seven million, four hundred twenty-three thousand, five hundred seven".