61870957 has 4 divisors (see below), whose sum is σ = 61888480. Its totient is φ = 61853436.

The previous prime is 61870901. The next prime is 61870979. The reversal of 61870957 is 75907816.

61870957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61870957 - 2¹⁹ = 61346669 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 (61870987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407 + ... + 11212.

It is an arithmetic number, because the mean of its divisors is an integer number (15472120).

Almost surely, 2^61870957 is an apocalyptic number.

It is an amenable number.

61870957 is a deficient number, since it is larger than the sum of its proper divisors (17523).

61870957 is a wasteful number, since it uses less digits than its factorization.

61870957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17522.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 61870957 is about 7865.8093671281. The cubic root of 61870957 is about 395.5143798084.

The spelling of 61870957 in words is "sixty-one million, eight hundred seventy thousand, nine hundred fifty-seven".