137620471 has 2 divisors, whose sum is σ = 137620472. Its totient is φ = 137620470.

The previous prime is 137620451. The next prime is 137620481. The reversal of 137620471 is 174026731.

It is a strong prime.

It is an emirp because it is prime and its reverse (174026731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137620471 - 2²¹ = 135523319 is a prime.

It is a super-3 number, since 3×137620471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137620421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68810235 + 68810236.

It is an arithmetic number, because the mean of its divisors is an integer number (68810236).

Almost surely, 2^137620471 is an apocalyptic number.

137620471 is a deficient number, since it is larger than the sum of its proper divisors (1).

137620471 is an equidigital number, since it uses as much as digits as its factorization.

137620471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 137620471 is about 11731.1751755738. The cubic root of 137620471 is about 516.2907528992.

The spelling of 137620471 in words is "one hundred thirty-seven million, six hundred twenty thousand, four hundred seventy-one".