61349690 has 8 divisors (see below), whose sum is σ = 110429460. Its totient is φ = 24539872.

The previous prime is 61349681. The next prime is 61349693. The reversal of 61349690 is 9694316.

It can be written as a sum of positive squares in 2 ways, for example, as 56505289 + 4844401 = 7517^2 + 2201^2 .

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

It is a super-2 number, since 2×61349690² = 7527568926192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61349693) 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, 3067475 + ... + 3067494.

Almost surely, 2^61349690 is an apocalyptic number.

61349690 is a deficient number, since it is larger than the sum of its proper divisors (49079770).

61349690 is a wasteful number, since it uses less digits than its factorization.

61349690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134976.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 61349690 is about 7832.6042923156. The cubic root of 61349690 is about 394.4005006186.

The spelling of 61349690 in words is "sixty-one million, three hundred forty-nine thousand, six hundred ninety".