61798415 has 16 divisors (see below), whose sum is σ = 84939840. Its totient is φ = 42282240.

The previous prime is 61798403. The next prime is 61798421. The reversal of 61798415 is 51489716.

61798415 = T₂₈₆₃ + T₂₈₆₄ + ... + T₂₈₇₇.

It is not a de Polignac number, because 61798415 - 2⁶ = 61798351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16541 + ... + 19929.

It is an arithmetic number, because the mean of its divisors is an integer number (5308740).

Almost surely, 2^61798415 is an apocalyptic number.

61798415 is a deficient number, since it is larger than the sum of its proper divisors (23141425).

61798415 is a wasteful number, since it uses less digits than its factorization.

61798415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3922.

The product of its digits is 60480, while the sum is 41.

The square root of 61798415 is about 7861.1967918377. The cubic root of 61798415 is about 395.3597427695.

The spelling of 61798415 in words is "sixty-one million, seven hundred ninety-eight thousand, four hundred fifteen".