61651098 has 32 divisors (see below), whose sum is σ = 137332800. Its totient is φ = 20500848.

The previous prime is 61651069. The next prime is 61651099. The reversal of 61651098 is 89015616.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61651099) 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, 26365 + ... + 28607.

It is an arithmetic number, because the mean of its divisors is an integer number (4291650).

Almost surely, 2^61651098 is an apocalyptic number.

61651098 is an abundant number, since it is smaller than the sum of its proper divisors (75681702).

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

61651098 is a wasteful number, since it uses less digits than its factorization.

61651098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763 (or 2757 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 61651098 is about 7851.8213173760. The cubic root of 61651098 is about 395.0453358208.

The spelling of 61651098 in words is "sixty-one million, six hundred fifty-one thousand, ninety-eight".