137204691 has 8 divisors (see below), whose sum is σ = 197011920. Its totient is φ = 84433632.

The previous prime is 137204689. The next prime is 137204707. The reversal of 137204691 is 196402731.

137204691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 137204691 - 2¹ = 137204689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137203691) 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, 1758996 + ... + 1759073.

It is an arithmetic number, because the mean of its divisors is an integer number (24626490).

Almost surely, 2^137204691 is an apocalyptic number.

137204691 is a deficient number, since it is larger than the sum of its proper divisors (59807229).

137204691 is a wasteful number, since it uses less digits than its factorization.

137204691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518085.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 137204691 is about 11713.4406132443. The cubic root of 137204691 is about 515.7702879031.

The spelling of 137204691 in words is "one hundred thirty-seven million, two hundred four thousand, six hundred ninety-one".