61978148 has 12 divisors (see below), whose sum is σ = 110769792. Its totient is φ = 30329640.

The previous prime is 61978139. The next prime is 61978153. The reversal of 61978148 is 84187916.

61978148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×61978148³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61978099 and 61978108.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 164648 + ... + 165023.

It is an arithmetic number, because the mean of its divisors is an integer number (9230816).

Almost surely, 2^61978148 is an apocalyptic number.

It is an amenable number.

61978148 is a deficient number, since it is larger than the sum of its proper divisors (48791644).

61978148 is a wasteful number, since it uses less digits than its factorization.

61978148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329722 (or 329720 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 61978148 is about 7872.6201483369. The cubic root of 61978148 is about 395.7426566614.

It can be divided in two parts, 61978 and 148, that added together give a palindrome (62126).

The spelling of 61978148 in words is "sixty-one million, nine hundred seventy-eight thousand, one hundred forty-eight".