70724619 has 24 divisors (see below), whose sum is σ = 116973792. Its totient is φ = 40337280.

The previous prime is 70724617. The next prime is 70724653. The reversal of 70724619 is 91642707.

It is a happy number.

It is not a de Polignac number, because 70724619 - 2¹ = 70724617 is a prime.

It is a super-2 number, since 2×70724619² = 10003943465390322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70724611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58687 + ... + 59879.

It is an arithmetic number, because the mean of its divisors is an integer number (4873908).

Almost surely, 2^70724619 is an apocalyptic number.

70724619 is a deficient number, since it is larger than the sum of its proper divisors (46249173).

70724619 is a wasteful number, since it uses less digits than its factorization.

70724619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147 (or 2144 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 70724619 is about 8409.7930414488. The cubic root of 70724619 is about 413.5457280038.

The spelling of 70724619 in words is "seventy million, seven hundred twenty-four thousand, six hundred nineteen".