140623601 has 2 divisors, whose sum is σ = 140623602. Its totient is φ = 140623600.

The previous prime is 140623597. The next prime is 140623619. The reversal of 140623601 is 106326041.

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., 126000625 + 14622976 = 11225^2 + 3824^2 .

It is a cyclic number.

It is not a de Polignac number, because 140623601 - 2² = 140623597 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140623621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70311800 + 70311801.

It is an arithmetic number, because the mean of its divisors is an integer number (70311801).

Almost surely, 2^140623601 is an apocalyptic number.

It is an amenable number.

140623601 is a deficient number, since it is larger than the sum of its proper divisors (1).

140623601 is an equidigital number, since it uses as much as digits as its factorization.

140623601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 140623601 is about 11858.4822384654. The cubic root of 140623601 is about 520.0192312907.

Adding to 140623601 its reverse (106326041), we get a palindrome (246949642).

The spelling of 140623601 in words is "one hundred forty million, six hundred twenty-three thousand, six hundred one".