137800877 has 4 divisors (see below), whose sum is σ = 141161916. Its totient is φ = 134439840.

The previous prime is 137800867. The next prime is 137800879. The reversal of 137800877 is 778008731.

137800877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42172036 + 95628841 = 6494^2 + 9779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137800877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 3360997 = 137800877 / (1 + 3 + 7 + 8 + 0 + 0 + 8 + 7 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137800879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680458 + ... + 1680539.

It is an arithmetic number, because the mean of its divisors is an integer number (35290479).

Almost surely, 2^137800877 is an apocalyptic number.

It is an amenable number.

137800877 is a deficient number, since it is larger than the sum of its proper divisors (3361039).

137800877 is an equidigital number, since it uses as much as digits as its factorization.

137800877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361038.

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 137800877 is about 11738.8618272812. The cubic root of 137800877 is about 516.5162553958.

The spelling of 137800877 in words is "one hundred thirty-seven million, eight hundred thousand, eight hundred seventy-seven".