612259997 has 2 divisors, whose sum is σ = 612259998. Its totient is φ = 612259996.

The previous prime is 612259993. The next prime is 612260017. The reversal of 612259997 is 799952216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 542470681 + 69789316 = 23291^2 + 8354^2 .

It is a cyclic number.

It is not a de Polignac number, because 612259997 - 2² = 612259993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612259993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306129998 + 306129999.

It is an arithmetic number, because the mean of its divisors is an integer number (306129999).

Almost surely, 2^612259997 is an apocalyptic number.

It is an amenable number.

612259997 is a deficient number, since it is larger than the sum of its proper divisors (1).

612259997 is an equidigital number, since it uses as much as digits as its factorization.

612259997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 50.

The square root of 612259997 is about 24743.8880736234. Note that the first 3 decimals coincide. The cubic root of 612259997 is about 849.1386878429.

The spelling of 612259997 in words is "six hundred twelve million, two hundred fifty-nine thousand, nine hundred ninety-seven".