61745732 has 6 divisors (see below), whose sum is σ = 108055038. Its totient is φ = 30872864.

The previous prime is 61745693. The next prime is 61745737. The reversal of 61745732 is 23754716.

It can be written as a sum of positive squares in only one way, i.e., 51351556 + 10394176 = 7166^2 + 3224^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61745692 and 61745701.

It is not an unprimeable number, because it can be changed into a prime (61745737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7718213 + ... + 7718220.

It is an arithmetic number, because the mean of its divisors is an integer number (18009173).

Almost surely, 2^61745732 is an apocalyptic number.

It is an amenable number.

61745732 is a deficient number, since it is larger than the sum of its proper divisors (46309306).

61745732 is a wasteful number, since it uses less digits than its factorization.

61745732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15436437 (or 15436435 counting only the distinct ones).

The product of its digits is 35280, while the sum is 35.

The square root of 61745732 is about 7857.8452517214. The cubic root of 61745732 is about 395.2473630860.

The spelling of 61745732 in words is "sixty-one million, seven hundred forty-five thousand, seven hundred thirty-two".