137666672 has 40 divisors (see below), whose sum is σ = 313365360. Its totient is φ = 57761280.

The previous prime is 137666651. The next prime is 137666681. The reversal of 137666672 is 276666731.

It is a super-2 number, since 2×137666672² = 37904225159111168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27797 + ... + 32372.

It is an arithmetic number, because the mean of its divisors is an integer number (7834134).

Almost surely, 2^137666672 is an apocalyptic number.

It is an amenable number.

137666672 is an abundant number, since it is smaller than the sum of its proper divisors (175698688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137666672 is a wasteful number, since it uses less digits than its factorization.

137666672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60201 (or 60195 counting only the distinct ones).

The product of its digits is 381024, while the sum is 44.

The square root of 137666672 is about 11733.1441651418. The cubic root of 137666672 is about 516.3485216311.

It can be divided in two parts, 1 and 37666672, that added together give a palindrome (37666673).

The spelling of 137666672 in words is "one hundred thirty-seven million, six hundred sixty-six thousand, six hundred seventy-two".