61838807 has 2 divisors, whose sum is σ = 61838808. Its totient is φ = 61838806.

The previous prime is 61838801. The next prime is 61838837. The reversal of 61838807 is 70883816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61838807 - 2²⁴ = 45061591 is a prime.

It is a super-3 number, since 3×61838807³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61838801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30919403 + 30919404.

It is an arithmetic number, because the mean of its divisors is an integer number (30919404).

Almost surely, 2^61838807 is an apocalyptic number.

61838807 is a deficient number, since it is larger than the sum of its proper divisors (1).

61838807 is an equidigital number, since it uses as much as digits as its factorization.

61838807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 61838807 is about 7863.7654466547. The cubic root of 61838807 is about 395.4458609046.

The spelling of 61838807 in words is "sixty-one million, eight hundred thirty-eight thousand, eight hundred seven".