61919070 has 32 divisors (see below), whose sum is σ = 149374368. Its totient is φ = 16426368.

The previous prime is 61919057. The next prime is 61919101. The reversal of 61919070 is 7091916.

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, 672 + ... + 11148.

It is an arithmetic number, because the mean of its divisors is an integer number (4667949).

Almost surely, 2^61919070 is an apocalyptic number.

61919070 is an abundant number, since it is smaller than the sum of its proper divisors (87455298).

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

61919070 is a wasteful number, since it uses less digits than its factorization.

61919070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10684.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 61919070 is about 7868.8671357445. The cubic root of 61919070 is about 395.6168751404.

The spelling of 61919070 in words is "sixty-one million, nine hundred nineteen thousand, seventy".