68902061 has 8 divisors (see below), whose sum is σ = 69858360. Its totient is φ = 67951872.

The previous prime is 68902049. The next prime is 68902073. The reversal of 68902061 is 16020986.

68902061 = 5869² + 5870².

It is an interprime number because it is at equal distance from previous prime (68902049) and next prime (68902073).

It can be written as a sum of positive squares in 4 ways, for example, as 26574025 + 42328036 = 5155^2 + 6506^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68902061 - 2¹⁰ = 68901037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68902081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24041 + ... + 26753.

It is an arithmetic number, because the mean of its divisors is an integer number (8732295).

Almost surely, 2^68902061 is an apocalyptic number.

68902061 is the 5870-th centered square number.

It is an amenable number.

68902061 is a deficient number, since it is larger than the sum of its proper divisors (956299).

68902061 is a wasteful number, since it uses less digits than its factorization.

68902061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 68902061 is about 8300.7265344667. The cubic root of 68902061 is about 409.9624415328.

The spelling of 68902061 in words is "sixty-eight million, nine hundred two thousand, sixty-one".