83870757 has 6 divisors (see below), whose sum is σ = 121146662. Its totient is φ = 55913832.

The previous prime is 83870713. The next prime is 83870771. The reversal of 83870757 is 75707838.

It can be written as a sum of positive squares in only one way, i.e., 68707521 + 15163236 = 8289^2 + 3894^2 .

It is not a de Polignac number, because 83870757 - 2¹⁰ = 83869733 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 (83870777) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4659478 + ... + 4659495.

Almost surely, 2^83870757 is an apocalyptic number.

It is an amenable number.

83870757 is a deficient number, since it is larger than the sum of its proper divisors (37275905).

83870757 is a wasteful number, since it uses less digits than its factorization.

83870757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9318979 (or 9318976 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 83870757 is about 9158.0978920298. The cubic root of 83870757 is about 437.7271867127.

The spelling of 83870757 in words is "eighty-three million, eight hundred seventy thousand, seven hundred fifty-seven".