127651649 has 8 divisors (see below), whose sum is σ = 135125760. Its totient is φ = 120382416.

The previous prime is 127651639. The next prime is 127651651. The reversal of 127651649 is 946156721.

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 127651649 - 2⁸ = 127651393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127651609) 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, 49937 + ... + 52430.

It is an arithmetic number, because the mean of its divisors is an integer number (16890720).

Almost surely, 2^127651649 is an apocalyptic number.

It is an amenable number.

127651649 is a deficient number, since it is larger than the sum of its proper divisors (7474111).

127651649 is a wasteful number, since it uses less digits than its factorization.

127651649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102439.

The product of its digits is 90720, while the sum is 41.

The square root of 127651649 is about 11298.3029256610. The cubic root of 127651649 is about 503.5108225514.

It can be divided in two parts, 1276 and 51649, that added together give a palindrome (52925).

The spelling of 127651649 in words is "one hundred twenty-seven million, six hundred fifty-one thousand, six hundred forty-nine".