756612149 has 8 divisors (see below), whose sum is σ = 822771288. Its totient is φ = 692858880.

The previous prime is 756612121. The next prime is 756612161. The reversal of 756612149 is 941216657.

It can be written as a sum of positive squares in 4 ways, for example, as 525784900 + 230827249 = 22930^2 + 15193^2 .

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 756612149 - 2⁸ = 756611893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (756612119) 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, 600812 + ... + 602069.

It is an arithmetic number, because the mean of its divisors is an integer number (102846411).

Almost surely, 2^756612149 is an apocalyptic number.

It is an amenable number.

756612149 is a deficient number, since it is larger than the sum of its proper divisors (66159139).

756612149 is a wasteful number, since it uses less digits than its factorization.

756612149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202935.

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

The square root of 756612149 is about 27506.5837391705. The cubic root of 756612149 is about 911.2225041835. Note that the first 3 decimals are identical.

The spelling of 756612149 in words is "seven hundred fifty-six million, six hundred twelve thousand, one hundred forty-nine".