61428087 has 12 divisors (see below), whose sum is σ = 101405200. Its totient is φ = 35101728.

The previous prime is 61428077. The next prime is 61428091. The reversal of 61428087 is 78082416.

It is not a de Polignac number, because 61428087 - 2⁷ = 61427959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61428047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 487462 + ... + 487587.

Almost surely, 2^61428087 is an apocalyptic number.

61428087 is a deficient number, since it is larger than the sum of its proper divisors (39977113).

61428087 is a wasteful number, since it uses less digits than its factorization.

61428087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975062 (or 975059 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 61428087 is about 7837.6072241469. The cubic root of 61428087 is about 394.5684267856.

The spelling of 61428087 in words is "sixty-one million, four hundred twenty-eight thousand, eighty-seven".