68620049 has 4 divisors (see below), whose sum is σ = 68784240. Its totient is φ = 68455860.

The previous prime is 68620033. The next prime is 68620051. The reversal of 68620049 is 94002686.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94002686 = 2 ⋅47001343.

It is a cyclic number.

It is not a de Polignac number, because 68620049 - 2⁴ = 68620033 is a prime.

It is a super-2 number, since 2×68620049² = 9417422249524802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68620249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81467 + ... + 82304.

It is an arithmetic number, because the mean of its divisors is an integer number (17196060).

Almost surely, 2^68620049 is an apocalyptic number.

It is an amenable number.

68620049 is a deficient number, since it is larger than the sum of its proper divisors (164191).

68620049 is a wasteful number, since it uses less digits than its factorization.

68620049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164190.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 68620049 is about 8283.7219291814. The cubic root of 68620049 is about 409.4023594868.

The spelling of 68620049 in words is "sixty-eight million, six hundred twenty thousand, forty-nine".