61898347 has 8 divisors (see below), whose sum is σ = 71901152. Its totient is φ = 52185600.

The previous prime is 61898321. The next prime is 61898363. The reversal of 61898347 is 74389816.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61898347 - 2¹¹ = 61896299 is a prime.

It is a super-2 number, since 2×61898347² = 7662810722664818, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61898297 and 61898306.

It is not an unprimeable number, because it can be changed into a prime (61898387) 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, 72054 + ... + 72907.

It is an arithmetic number, because the mean of its divisors is an integer number (8987644).

Almost surely, 2^61898347 is an apocalyptic number.

61898347 is a deficient number, since it is larger than the sum of its proper divisors (10002805).

61898347 is a wasteful number, since it uses less digits than its factorization.

61898347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145029.

The product of its digits is 290304, while the sum is 46.

The square root of 61898347 is about 7867.5502540499. The cubic root of 61898347 is about 395.5727353556.

The spelling of 61898347 in words is "sixty-one million, eight hundred ninety-eight thousand, three hundred forty-seven".