61111970 has 8 divisors (see below), whose sum is σ = 110001564. Its totient is φ = 24444784.

The previous prime is 61111933. The next prime is 61111979. The reversal of 61111970 is 7911116.

It can be written as a sum of positive squares in 2 ways, for example, as 58232161 + 2879809 = 7631^2 + 1697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61111979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055589 + ... + 3055608.

Almost surely, 2^61111970 is an apocalyptic number.

61111970 is a deficient number, since it is larger than the sum of its proper divisors (48889594).

61111970 is a wasteful number, since it uses less digits than its factorization.

61111970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111204.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 61111970 is about 7817.4145342306. The cubic root of 61111970 is about 393.8904287889.

The spelling of 61111970 in words is "sixty-one million, one hundred eleven thousand, nine hundred seventy".