61898470 has 32 divisors (see below), whose sum is σ = 115758720. Its totient is φ = 23802240.

The previous prime is 61898467. The next prime is 61898477. The reversal of 61898470 is 7489816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61898477) 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, 133459 + ... + 133921.

It is an arithmetic number, because the mean of its divisors is an integer number (3617460).

Almost surely, 2^61898470 is an apocalyptic number.

61898470 is a deficient number, since it is larger than the sum of its proper divisors (53860250).

61898470 is a wasteful number, since it uses less digits than its factorization.

61898470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 61898470 is about 7867.5580709646. The cubic root of 61898470 is about 395.5729973734.

The spelling of 61898470 in words is "sixty-one million, eight hundred ninety-eight thousand, four hundred seventy".