61948649 has 8 divisors (see below), whose sum is σ = 70886208. Its totient is φ = 53033040.

The previous prime is 61948597. The next prime is 61948673. The reversal of 61948649 is 94684916.

It is a happy number.

61948649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61948649 is a prime.

It is a super-2 number, since 2×61948649² = 7675270225850402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61948349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094 + ... + 11184.

It is an arithmetic number, because the mean of its divisors is an integer number (8860776).

Almost surely, 2^61948649 is an apocalyptic number.

It is an amenable number.

61948649 is a deficient number, since it is larger than the sum of its proper divisors (8937559).

61948649 is a wasteful number, since it uses less digits than its factorization.

61948649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10975.

The product of its digits is 373248, while the sum is 47.

The square root of 61948649 is about 7870.7464067901. The cubic root of 61948649 is about 395.6798610600.

The spelling of 61948649 in words is "sixty-one million, nine hundred forty-eight thousand, six hundred forty-nine".