61902870 has 16 divisors (see below), whose sum is σ = 148566960. Its totient is φ = 16507424.

The previous prime is 61902857. The next prime is 61902889. The reversal of 61902870 is 7820916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031685 + ... + 1031744.

It is an arithmetic number, because the mean of its divisors is an integer number (9285435).

Almost surely, 2^61902870 is an apocalyptic number.

61902870 is an abundant number, since it is smaller than the sum of its proper divisors (86664090).

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

61902870 is a wasteful number, since it uses less digits than its factorization.

61902870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063439.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 61902870 is about 7867.8376953265. The cubic root of 61902870 is about 395.5823701412.

The spelling of 61902870 in words is "sixty-one million, nine hundred two thousand, eight hundred seventy".