61570977 has 32 divisors (see below), whose sum is σ = 93477888. Its totient is φ = 35762496.

The previous prime is 61570967. The next prime is 61570979. The reversal of 61570977 is 77907516.

It is not a de Polignac number, because 61570977 - 2¹⁴ = 61554593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61570979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74038 + ... + 74864.

It is an arithmetic number, because the mean of its divisors is an integer number (2921184).

Almost surely, 2^61570977 is an apocalyptic number.

It is an amenable number.

61570977 is a deficient number, since it is larger than the sum of its proper divisors (31906911).

61570977 is a wasteful number, since it uses less digits than its factorization.

61570977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949.

The product of its (nonzero) digits is 92610, while the sum is 42.

The square root of 61570977 is about 7846.7175940007. The cubic root of 61570977 is about 394.8741296323.

The spelling of 61570977 in words is "sixty-one million, five hundred seventy thousand, nine hundred seventy-seven".