127007661 has 8 divisors (see below), whose sum is σ = 184738464. Its totient is φ = 76974320.

The previous prime is 127007659. The next prime is 127007669. The reversal of 127007661 is 166700721.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 127007661 - 2¹ = 127007659 is a prime.

It is a super-2 number, since 2×127007661² = 32261891905381842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127007669) 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, 1924326 + ... + 1924391.

It is an arithmetic number, because the mean of its divisors is an integer number (23092308).

Almost surely, 2^127007661 is an apocalyptic number.

127007661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

127007661 is a deficient number, since it is larger than the sum of its proper divisors (57730803).

127007661 is a wasteful number, since it uses less digits than its factorization.

127007661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848731.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 127007661 is about 11269.7675663698. The cubic root of 127007661 is about 502.6626764707.

The spelling of 127007661 in words is "one hundred twenty-seven million, seven thousand, six hundred sixty-one".