61087690 has 32 divisors (see below), whose sum is σ = 112783104. Its totient is φ = 23815680.

The previous prime is 61087669. The next prime is 61087693. The reversal of 61087690 is 9678016.

It is a super-2 number, since 2×61087690² = 7463411739072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61087693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68427 + ... + 69313.

It is an arithmetic number, because the mean of its divisors is an integer number (3524472).

Almost surely, 2^61087690 is an apocalyptic number.

61087690 is a deficient number, since it is larger than the sum of its proper divisors (51695414).

61087690 is a wasteful number, since it uses less digits than its factorization.

61087690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 61087690 is about 7815.8614368475. The cubic root of 61087690 is about 393.8382571960.

The spelling of 61087690 in words is "sixty-one million, eighty-seven thousand, six hundred ninety".