68299137 has 6 divisors (see below), whose sum is σ = 98654322. Its totient is φ = 45532752.

The previous prime is 68299111. The next prime is 68299141. The reversal of 68299137 is 73199286.

It can be written as a sum of positive squares in only one way, i.e., 35569296 + 32729841 = 5964^2 + 5721^2 .

It is not a de Polignac number, because 68299137 - 2⁷ = 68299009 is a prime.

It is a super-2 number, since 2×68299137² = 9329544229889538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68299092 and 68299101.

It is not an unprimeable number, because it can be changed into a prime (68299157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3794388 + ... + 3794405.

It is an arithmetic number, because the mean of its divisors is an integer number (16442387).

Almost surely, 2^68299137 is an apocalyptic number.

It is an amenable number.

68299137 is a deficient number, since it is larger than the sum of its proper divisors (30355185).

68299137 is a wasteful number, since it uses less digits than its factorization.

68299137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588799 (or 7588796 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 68299137 is about 8264.3291923785. The cubic root of 68299137 is about 408.7631513879.

The spelling of 68299137 in words is "sixty-eight million, two hundred ninety-nine thousand, one hundred thirty-seven".