626040101 has 4 divisors (see below), whose sum is σ = 658989600. Its totient is φ = 593090604.

The previous prime is 626040097. The next prime is 626040137. The reversal of 626040101 is 101040626.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 626040101 - 2² = 626040097 is a prime.

It is a super-4 number, since 4×626040101⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626042101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16474721 + ... + 16474758.

It is an arithmetic number, because the mean of its divisors is an integer number (164747400).

Almost surely, 2^626040101 is an apocalyptic number.

It is an amenable number.

626040101 is a deficient number, since it is larger than the sum of its proper divisors (32949499).

626040101 is a wasteful number, since it uses less digits than its factorization.

626040101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32949498.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 626040101 is about 25020.7933727130. The cubic root of 626040101 is about 855.4619898734.

Adding to 626040101 its reverse (101040626), we get a palindrome (727080727).

The spelling of 626040101 in words is "six hundred twenty-six million, forty thousand, one hundred one".