61377590 has 32 divisors (see below), whose sum is σ = 113028480. Its totient is φ = 23990400.

The previous prime is 61377577. The next prime is 61377607. The reversal of 61377590 is 9577316.

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, 145580 + ... + 146000.

It is an arithmetic number, because the mean of its divisors is an integer number (3532140).

Almost surely, 2^61377590 is an apocalyptic number.

61377590 is a deficient number, since it is larger than the sum of its proper divisors (51650890).

61377590 is a wasteful number, since it uses less digits than its factorization.

61377590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 61377590 is about 7834.3851066947. The cubic root of 61377590 is about 394.4602787328.

The spelling of 61377590 in words is "sixty-one million, three hundred seventy-seven thousand, five hundred ninety".