137640046 has 8 divisors (see below), whose sum is σ = 210355704. Its totient is φ = 67521480.

The previous prime is 137640029. The next prime is 137640049. The reversal of 137640046 is 640046731.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137640049) 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, 649140 + ... + 649351.

It is an arithmetic number, because the mean of its divisors is an integer number (26294463).

Almost surely, 2^137640046 is an apocalyptic number.

137640046 is a deficient number, since it is larger than the sum of its proper divisors (72715658).

137640046 is a wasteful number, since it uses less digits than its factorization.

137640046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298546.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 137640046 is about 11732.0094612986. The cubic root of 137640046 is about 516.3152306344.

Adding to 137640046 its reverse (640046731), we get a palindrome (777686777).

The spelling of 137640046 in words is "one hundred thirty-seven million, six hundred forty thousand, forty-six".