61520198 has 8 divisors (see below), whose sum is σ = 92331408. Its totient is φ = 30743064.

The previous prime is 61520191. The next prime is 61520203. The reversal of 61520198 is 89102516.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61520191) 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, 3386 + ... + 11597.

It is an arithmetic number, because the mean of its divisors is an integer number (11541426).

Almost surely, 2^61520198 is an apocalyptic number.

61520198 is a deficient number, since it is larger than the sum of its proper divisors (30811210).

61520198 is a wasteful number, since it uses less digits than its factorization.

61520198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17038.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 61520198 is about 7843.4812424076. The cubic root of 61520198 is about 394.7655458525.

The spelling of 61520198 in words is "sixty-one million, five hundred twenty thousand, one hundred ninety-eight".