61812148 has 6 divisors (see below), whose sum is σ = 108171266. Its totient is φ = 30906072.

The previous prime is 61812143. The next prime is 61812167. The reversal of 61812148 is 84121816.

It can be written as a sum of positive squares in only one way, i.e., 46539684 + 15272464 = 6822^2 + 3908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61812143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7726515 + ... + 7726522.

Almost surely, 2^61812148 is an apocalyptic number.

It is an amenable number.

61812148 is a deficient number, since it is larger than the sum of its proper divisors (46359118).

61812148 is a wasteful number, since it uses less digits than its factorization.

61812148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15453041 (or 15453039 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 61812148 is about 7862.0702108287. The cubic root of 61812148 is about 395.3890265476.

The spelling of 61812148 in words is "sixty-one million, eight hundred twelve thousand, one hundred forty-eight".