61199658 has 32 divisors (see below), whose sum is σ = 146462400. Its totient is φ = 18830448.

The previous prime is 61199639. The next prime is 61199669. The reversal of 61199658 is 85699116.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42888 + ... + 44291.

It is an arithmetic number, because the mean of its divisors is an integer number (4576950).

Almost surely, 2^61199658 is an apocalyptic number.

61199658 is an abundant number, since it is smaller than the sum of its proper divisors (85262742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61199658 is a wasteful number, since it uses less digits than its factorization.

61199658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87203 (or 87197 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 61199658 is about 7823.0210277105. The cubic root of 61199658 is about 394.0787331813.

The spelling of 61199658 in words is "sixty-one million, one hundred ninety-nine thousand, six hundred fifty-eight".