61764148 has 6 divisors (see below), whose sum is σ = 108087266. Its totient is φ = 30882072.

The previous prime is 61764139. The next prime is 61764149. The reversal of 61764148 is 84146716.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 39087504 + 22676644 = 6252^2 + 4762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61764149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7720515 + ... + 7720522.

Almost surely, 2^61764148 is an apocalyptic number.

It is an amenable number.

61764148 is a deficient number, since it is larger than the sum of its proper divisors (46323118).

61764148 is a wasteful number, since it uses less digits than its factorization.

61764148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15441041 (or 15441039 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 61764148 is about 7859.0169868756. The cubic root of 61764148 is about 395.2866540711.

The spelling of 61764148 in words is "sixty-one million, seven hundred sixty-four thousand, one hundred forty-eight".