61627745 has 4 divisors (see below), whose sum is σ = 73953300. Its totient is φ = 49302192.

The previous prime is 61627723. The next prime is 61627759. The reversal of 61627745 is 54772616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11444689 + 50183056 = 3383^2 + 7084^2 .

It is a cyclic number.

It is not a de Polignac number, because 61627745 - 2¹² = 61623649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61627699 and 61627708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6162770 + ... + 6162779.

It is an arithmetic number, because the mean of its divisors is an integer number (18488325).

Almost surely, 2^61627745 is an apocalyptic number.

It is an amenable number.

61627745 is a deficient number, since it is larger than the sum of its proper divisors (12325555).

61627745 is a wasteful number, since it uses less digits than its factorization.

61627745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12325554.

The product of its digits is 70560, while the sum is 38.

The square root of 61627745 is about 7850.3340693247. The cubic root of 61627745 is about 394.9954493948.

The spelling of 61627745 in words is "sixty-one million, six hundred twenty-seven thousand, seven hundred forty-five".