61306480 has 40 divisors (see below), whose sum is σ = 146021904. Its totient is φ = 23923200.

The previous prime is 61306463. The next prime is 61306489. The reversal of 61306480 is 8460316.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61306489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6066 + ... + 12625.

Almost surely, 2^61306480 is an apocalyptic number.

It is an amenable number.

61306480 is an abundant number, since it is smaller than the sum of its proper divisors (84715424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61306480 is a wasteful number, since it uses less digits than its factorization.

61306480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18745 (or 18739 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 61306480 is about 7829.8454646308. The cubic root of 61306480 is about 394.3078837516.

Adding to 61306480 its reverse (8460316), we get a palindrome (69766796).

The spelling of 61306480 in words is "sixty-one million, three hundred six thousand, four hundred eighty".