61011958 has 12 divisors (see below), whose sum is σ = 106459812. Its totient is φ = 26147940.

The previous prime is 61011953. The next prime is 61011961. The reversal of 61011958 is 85911016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61011953) 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, 311188 + ... + 311383.

It is an arithmetic number, because the mean of its divisors is an integer number (8871651).

Almost surely, 2^61011958 is an apocalyptic number.

61011958 is a deficient number, since it is larger than the sum of its proper divisors (45447854).

61011958 is a wasteful number, since it uses less digits than its factorization.

61011958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622587 (or 622580 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 61011958 is about 7811.0151708981. The cubic root of 61011958 is about 393.6754393800.

The spelling of 61011958 in words is "sixty-one million, eleven thousand, nine hundred fifty-eight".