137772649 has 16 divisors (see below), whose sum is σ = 168145920. Its totient is φ = 110335680.

The previous prime is 137772643. The next prime is 137772659. The reversal of 137772649 is 946277731.

137772649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 137772649 - 2⁹ = 137772137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137772599 and 137772608.

It is not an unprimeable number, because it can be changed into a prime (137772643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4654 + ... + 17239.

It is an arithmetic number, because the mean of its divisors is an integer number (10509120).

Almost surely, 2^137772649 is an apocalyptic number.

It is an amenable number.

137772649 is a deficient number, since it is larger than the sum of its proper divisors (30373271).

137772649 is a wasteful number, since it uses less digits than its factorization.

137772649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21960.

The product of its digits is 444528, while the sum is 46.

The square root of 137772649 is about 11737.6594344869. The cubic root of 137772649 is about 516.4809841725.

The spelling of 137772649 in words is "one hundred thirty-seven million, seven hundred seventy-two thousand, six hundred forty-nine".