61198258 has 16 divisors (see below), whose sum is σ = 100414080. Its totient is φ = 27742000.

The previous prime is 61198253. The next prime is 61198273. The reversal of 61198258 is 85289116.

It is a self number, because there is not a number n which added to its sum of digits gives 61198258.

It is not an unprimeable number, because it can be changed into a prime (61198253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4983 + ... + 12133.

It is an arithmetic number, because the mean of its divisors is an integer number (6275880).

Almost surely, 2^61198258 is an apocalyptic number.

61198258 is a deficient number, since it is larger than the sum of its proper divisors (39215822).

61198258 is a wasteful number, since it uses less digits than its factorization.

61198258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7553.

The product of its digits is 34560, while the sum is 40.

The square root of 61198258 is about 7822.9315477000. The cubic root of 61198258 is about 394.0757281839.

The spelling of 61198258 in words is "sixty-one million, one hundred ninety-eight thousand, two hundred fifty-eight".