61935970 has 16 divisors (see below), whose sum is σ = 111772728. Its totient is φ = 24710400.

The previous prime is 61935949. The next prime is 61935971. The reversal of 61935970 is 7953916.

It can be written as a sum of positive squares in 4 ways, for example, as 61261929 + 674041 = 7827^2 + 821^2 .

It is not an unprimeable number, because it can be changed into a prime (61935971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3831 + ... + 11770.

Almost surely, 2^61935970 is an apocalyptic number.

61935970 is a deficient number, since it is larger than the sum of its proper divisors (49836758).

61935970 is a wasteful number, since it uses less digits than its factorization.

61935970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16005.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 61935970 is about 7869.9409146448. The cubic root of 61935970 is about 395.6528646829.

The spelling of 61935970 in words is "sixty-one million, nine hundred thirty-five thousand, nine hundred seventy".