61065998 has 16 divisors (see below), whose sum is σ = 104963040. Its totient is φ = 26101536.

The previous prime is 61065997. The next prime is 61066007. The reversal of 61065998 is 89956016.

It is a super-2 number, since 2×61065998² = 7458112223472008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61065997) 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, 161 + ... + 11052.

It is an arithmetic number, because the mean of its divisors is an integer number (6560190).

Almost surely, 2^61065998 is an apocalyptic number.

61065998 is a deficient number, since it is larger than the sum of its proper divisors (43897042).

61065998 is a wasteful number, since it uses less digits than its factorization.

61065998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11611.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 61065998 is about 7814.4736227081. The cubic root of 61065998 is about 393.7916348684.

The spelling of 61065998 in words is "sixty-one million, sixty-five thousand, nine hundred ninety-eight".