623172297 has 16 divisors (see below), whose sum is σ = 927514368. Its totient is φ = 368896080.

The previous prime is 623172269. The next prime is 623172307. The reversal of 623172297 is 792271326.

It is not a de Polignac number, because 623172297 - 2¹⁰ = 623171273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (623172197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218163 + ... + 221000.

It is an arithmetic number, because the mean of its divisors is an integer number (57969648).

Almost surely, 2^623172297 is an apocalyptic number.

It is an amenable number.

623172297 is a deficient number, since it is larger than the sum of its proper divisors (304342071).

623172297 is a wasteful number, since it uses less digits than its factorization.

623172297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439220.

The product of its digits is 63504, while the sum is 39.

The square root of 623172297 is about 24963.4191768676. The cubic root of 623172297 is about 854.1537387735.

The spelling of 623172297 in words is "six hundred twenty-three million, one hundred seventy-two thousand, two hundred ninety-seven".